files: add preliminary support for full paths

This represents the first step in migrating `home.file` to support
arbitrary absolute paths. This is to allow Home Manager to manage
files anywhere, provided the user has sufficient privileges.

For example, with this change the configuration

    home.file."test/one".text = "foo";
    home.file."/test/two".text = "foo";

will result in the files "$HOME/test/one" and "/test/two",
respectively. Note, a relative file name will still be relative
`$HOME`.

To allow a reasonable transition between the old and new path handling
we introduce the notion of "generation directory layout version". The
version is simply a file `version` within the generation directory
containing a number indicating the version number.

The version 0 (also implied if the version file is missing) indicates
the legacy layout where managed file paths always are relative
`$HOME`.

Version 1 indicates the new layout where managed file paths are
relative `/`.

.github/CODEOWNERS

@@ -4,6 +4,9 @@
 
 /modules/home-environment.nix                         @rycee
 
+/modules/i18n/input-method                            @Kranzes
+/tests/modules/i18n/input-method                      @Kranzes
+
 /modules/misc/dconf.nix                               @gnidorah @rycee
 
 /modules/misc/fontconfig.nix                          @rycee
@@ -37,6 +40,11 @@
 /modules/misc/xdg-system-dirs.nix                     @tadfisher
 /tests/modules/misc/xdg/system-dirs.nix               @tadfisher
 
+/modules/misc/xdg-desktop-entries.nix                 @cwyc
+/tests/modules/misc/xdg/desktop-entries.nix           @cwyc
+/tests/modules/misc/xdg/desktop-full-expected.desktop @cwyc
+/tests/modules/misc/xdg/desktop-min-expected.desktop  @cwyc
+
 /modules/programs/aria2.nix                           @JustinLovinger
 
 /modules/programs/autojump.nix                        @evanjs
@@ -72,10 +80,13 @@
 
 /modules/programs/git.nix                             @rycee
 
-/modules/programs/gnome-terminal.nix                  @rycee
+/modules/programs/gnome-terminal.nix                  @kamadorueda @rycee
 
 /modules/programs/go.nix                              @rvolosatovs
 
+/modules/programs/himalaya.nix                        @ambroisie
+/tests/modules/programs/himalaya                      @ambroisie
+
 /modules/programs/home-manager.nix                    @rycee
 
 /modules/programs/htop.nix                            @bjpbakker
@@ -99,6 +110,9 @@
 
 /modules/programs/matplotlib.nix                      @rprospero
 
+/modules/programs/mangohud.nix                        @ZerataX
+/tests/modules/programs/mangohud                      @ZerataX
+
 /modules/programs/mbsync.nix                          @KarlJoad
 /tests/modules/programs/mbsync                        @KarlJoad
 
@@ -143,8 +157,13 @@
 
 /modules/programs/pidgin.nix                          @rycee
 
+/modules/programs/piston-cli.nix                      @ethancedwards8
+
 /modules/programs/powerline-go.nix                    @DamienCassou
 
+/modules/programs/rbw.nix                             @ambroisie
+/tests/modules/programs/rbw                           @ambroisie
+
 /modules/programs/rofi.nix                            @thiagokokada
 /tests/modules/programs/rofi                          @thiagokokada
 
@@ -159,10 +178,17 @@
 /modules/programs/scmpuff.nix                         @cpcloud
 /tests/modules/programs/scmpuff                       @cpcloud
 
+/modules/programs/senpai.nix                          @malte-v
+
+/modules/programs/sm64ex.nix                          @ivarwithoutbones
+/tests/modules/programs/sm64ex                        @ivarwithoutbones
+
 /modules/programs/ssh.nix                             @rycee
 
 /modules/programs/starship.nix                        @marsam
 
+/modules/programs/terminator.nix                      @chisui
+
 /modules/programs/texlive.nix                         @rycee
 
 /modules/programs/topgrade.nix                        @msfjarvis
@@ -171,6 +197,9 @@
 /modules/programs/waybar.nix                          @berbiche
 /tests/modules/programs/waybar                        @berbiche
 
+/modules/programs/xmobar.nix                          @t4ccer
+/tests/modules/programs/xmobar                        @t4ccer
+
 /modules/programs/z-lua.nix                           @marsam
 
 /modules/programs/zathura.nix                         @rprospero
@@ -188,6 +217,9 @@
 
 /modules/services/clipmenu.nix                        @DamienCassou
 
+/modules/services/devilspie2.nix                      @dawidsowa
+/tests/modules/services/devilspie2                    @dawidsowa
+
 /modules/services/dropbox.nix                         @eyJhb
 /tests/modules/services/dropbox                       @eyJhb
 
@@ -234,6 +266,9 @@
 
 /modules/services/network-manager-applet.nix          @rycee
 
+/modules/services/pantalaimon.nix                     @jojosch
+/tests/modules/services/pantalaimon                   @jojosch
+
 /modules/services/parcellite.nix                      @gleber
 
 /modules/services/pass-secret-service.nix             @cab404
@@ -269,10 +304,16 @@
 
 /modules/services/taskwarrior-sync.nix                @minijackson @pacien
 
+/modules/services/trayer.nix                          @AndreasMager
+/tests/modules/services/trayer                        @AndreasMager
+
 /modules/services/udiskie.nix                         @rycee
 
 /modules/services/unison.nix                          @pacien
 
+/modules/services/window-managers/bspwm               @ncfavier
+/tests/modules/services/window-managers/bspwm         @ncfavier
+
 /modules/services/window-managers/i3-sway/i3.nix      @sumnerevans
 /tests/modules/services/window-managers/i3            @sumnerevans
 
@@ -288,6 +329,8 @@
 
 /modules/services/xembed-sni-proxy.nix                @rycee
 
+/modules/services/xidlehook.nix                       @dschrempf
+
 /modules/services/xscreensaver.nix                    @rycee
 
 /modules/services/xsuspender.nix                      @offlinehacker
@@ -299,3 +342,5 @@
 /modules/xresources.nix                               @rycee
 
 /modules/xsession.nix                                 @rycee
+
+/modules/services/volnoti.nix                         @IvanMalison

.github/ISSUE_TEMPLATE.md

@@ -1,38 +0,0 @@
-<!--
-
-If you are encountering the error
-
-  element xref: validity error : IDREF attribute linkend references an unknown ID "opt-home.file._name__.source"
-
-then it means that you are using an old version of Home Manager, such
-as the release-20.03 branch, with a recent version of Nixpkgs, such as
-version 20.09 or master. See https://git.io/JTb6K for more.
-
-In general, please check if there already exists a relevant issue
-before creating a new one.
-
--->
-
-### Issue description
-
-<!--
-Please describe the issue. For support and help please use the IRC
-channel #home-manager @ freenode.net instead.
--->
-
-### Meta
-
-#### Maintainer CC
-
-<!--
-Please @ people who are in the `meta.maintainers` list of the
-offending module. If in doubt, check `git blame` for whoever last
-touched something.
--->
-
-#### Technical details
-
-<!--
-Please run `nix-shell -p nix-info --run "nix-info -m"` and paste the
-result.
--->

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,15 @@
+---
+name: Feature request
+about: Ask for a new feature to be added (module, program, etc.)
+title: ''
+labels: feature request
+assignees: rycee, berbiche, sumnerevans
+
+---
+
+<!--
+Note: Please search to see if the feature has already been requested
+-->
+
+### Description
+

.github/ISSUE_TEMPLATE/issue.yaml

@@ -0,0 +1,46 @@
+name: Bug Report
+description: File a bug/issue
+title: 'bug: '
+labels: [bug, triage]
+
+# We cannot use nix-community/home-manager
+# See https://github.com/dear-github/dear-github/issues/170
+assignees: [rycee, berbiche, sumnerevans]
+
+body:
+- type: checkboxes
+  attributes:
+    label: Is there an existing issue for this?
+    description: |
+      Please search to see if an issue already exists for the bug you encountered.
+    options:
+    - label: I have searched the existing issues
+      required: true
+- type: textarea
+  attributes:
+    label: Issue description
+    description: |
+      Please describe the issue.
+
+      For support and help please use the IRC channel #home-manager at irc.oftc.net or
+      Matrix room <https://matrix.to/#/#hm:rycee.net> instead.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Maintainer CC
+    description: |
+      Please @ people who are in the `meta.maintainers` list of the offending module.
+      If in doubt, check `git blame` for whoever last touched something.
+  validations:
+    required: false
+- type: textarea
+  id: system
+  attributes:
+    label: System information
+    description: |
+      Please run `nix-shell -p nix-info --run "nix-info -m"` and paste the result.
+    render: markdown
+  validations:
+    required: true
+

.release

@@ -0,0 +1 @@
+21.11

README.md

@@ -32,7 +32,7 @@ will write to your dconf store and cannot tell whether a configuration
 that it is about to be overwritten was from a previous Home Manager
 generation or from manual configuration.
 
-Home Manager targets [NixOS][] unstable and NixOS version 20.09 (the
+Home Manager targets [NixOS][] unstable and NixOS version 21.05 (the
 current stable version), it may or may not work on other Linux
 distributions and NixOS versions.
 
@@ -75,10 +75,10 @@ Currently the easiest way to install Home Manager is as follows:
     $ nix-channel --update
     ```
 
-    and if you follow a Nixpkgs version 20.09 channel you can run
+    and if you follow a Nixpkgs version 21.05 channel you can run
 
     ```console
-    $ nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
+    $ nix-channel --add https://github.com/nix-community/home-manager/archive/release-21.05.tar.gz home-manager
     $ nix-channel --update
     ```
 
@@ -142,7 +142,7 @@ configuration generations.
 As an example, let us expand the initial configuration file from the
 installation above to install the htop and fortune packages, install
 Emacs with a few extra packages enabled, install Firefox with
-smooth scrolling enabled, and enable the user gpg-agent service.
+smooth scrolling disabled, and enable the user gpg-agent service.
 
 To satisfy the above setup we should elaborate the
 `~/.config/nixpkgs/home.nix` file as follows:
@@ -279,7 +279,7 @@ then result in
 $ home-manager switch
 …
 Activating checkLinkTargets
-Existing file '/home/jdoe/.gitconfig' is in the way
+Existing file '/home/jdoe/.config/git/config' is in the way
 Please move the above files and try again
 ```
 
@@ -366,7 +366,7 @@ Home Manager is developed against `nixpkgs-unstable` branch, which
 often causes it to contain tweaks for changes/packages not yet
 released in stable NixOS. To avoid breaking users' configurations,
 Home Manager is released in branches corresponding to NixOS releases
-(e.g. `release-20.09`). These branches get fixes, but usually not new
+(e.g. `release-21.05`). These branches get fixes, but usually not new
 modules. If you need a module to be backported, then feel free to open
 an issue.
 

doc/faq.adoc

@@ -40,6 +40,8 @@ error: build of ‘/nix/store/b37x3s7pzxbasfqhaca5dqbf3pjjw0ip-user-environment.
 
 The solution is typically to uninstall the package from the environment using `nix-env --uninstall` and reattempt the Home Manager generation switch.
 
+You could also opt to unistall _all_ of the packages from your profile with `nix-env --uninstall '*'`.
+
 === Why are the session variables not set?
 
 Home Manager is only able to set session variables automatically if it manages your Bash or Z shell configuration. If you don't want to let Home Manager manage your shell then you will have to manually source the `~/.nix-profile/etc/profile.d/hm-session-vars.sh` file in an appropriate way. In Bash and Z shell this can be done by adding
@@ -92,7 +94,7 @@ error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name ca.desrt.
 The solution on NixOS is to add
 
 [source,nix]
-services.dbus.packages = with pkgs; [ gnome3.dconf ];
+services.dbus.packages = with pkgs; [ gnome.dconf ];
 
 to your system configuration.
 

doc/installation.adoc

@@ -47,11 +47,11 @@ $ nix-channel --add https://github.com/nix-community/home-manager/archive/master
 $ nix-channel --update
 ----
 +
-and if you follow a Nixpkgs version 20.09 channel, you can run
+and if you follow a Nixpkgs version 21.05 channel, you can run
 +
 [source,console]
 ----
-$ nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
+$ nix-channel --add https://github.com/nix-community/home-manager/archive/release-21.05.tar.gz home-manager
 $ nix-channel --update
 ----
 +
@@ -125,11 +125,11 @@ or an unstable channel, you can run
 # nix-channel --update
 ----
 
-and if you follow a Nixpkgs version 20.09 channel, you can run
+and if you follow a Nixpkgs version 21.05 channel, you can run
 
 [source,console]
 ----
-# nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
+# nix-channel --add https://github.com/nix-community/home-manager/archive/release-21.05.tar.gz home-manager
 # nix-channel --update
 ----
 
@@ -203,11 +203,11 @@ or an unstable channel, you can run
 # nix-channel --update
 ----
 
-and if you follow a Nixpkgs version 20.09 channel, you can run
+and if you follow a Nixpkgs version 21.05 channel, you can run
 
 [source,console]
 ----
-# nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
+# nix-channel --add https://github.com/nix-community/home-manager/archive/release-21.05.tar.gz home-manager
 # nix-channel --update
 ----
 

doc/man-home-manager.xml

@@ -12,47 +12,51 @@
  </refnamediv>
  <refsynopsisdiv>
   <cmdsynopsis>
-   <command>home-manager</command> <group choice="req"> 
+   <command>home-manager</command> <group choice="req">
    <arg choice="plain">
     build
    </arg>
-    
+
    <arg choice="plain">
     instantiate
    </arg>
-    
+
    <arg choice="plain">
     edit
    </arg>
-    
+
    <arg choice="plain">
     expire-generations <replaceable>timestamp</replaceable>
    </arg>
-    
+
    <arg choice="plain">
     generations
    </arg>
-    
+
    <arg choice="plain">
     help
    </arg>
-    
+
    <arg choice="plain">
     news
    </arg>
-    
+
+   <arg choice="plain">
+    option <replaceable>option.name</replaceable>
+   </arg>
+
    <arg choice="plain">
     packages
    </arg>
-    
+
    <arg choice="plain">
     remove-generations <replaceable>ID …</replaceable>
    </arg>
-    
+
    <arg choice="plain">
     switch
    </arg>
-    
+
    <arg choice="plain">
     uninstall
    </arg>
@@ -61,63 +65,63 @@
    <arg>
     -A <replaceable>attrPath</replaceable>
    </arg>
-    
+
    <arg>
     -I <replaceable>path</replaceable>
    </arg>
-    
+
    <arg>
     --flake <replaceable>flake-uri</replaceable>
    </arg>
-    
+
    <arg>
     -b <replaceable>ext</replaceable>
    </arg>
-    
+
    <arg>
-    <group choice="req"> 
+    <group choice="req">
     <arg choice="plain">
      -f
     </arg>
-     
+
     <arg choice="plain">
      --file
     </arg>
      </group> <replaceable>path</replaceable>
    </arg>
-    
+
    <arg>
-    <group choice="req"> 
+    <group choice="req">
     <arg choice="plain">
      -h
     </arg>
-     
+
     <arg choice="plain">
      --help
     </arg>
      </group>
    </arg>
-    
+
    <arg>
-    <group choice="req"> 
+    <group choice="req">
     <arg choice="plain">
      -n
     </arg>
-     
+
     <arg choice="plain">
      --dry-run
     </arg>
      </group>
    </arg>
-    
+
    <arg>
     --option <replaceable>name</replaceable> <replaceable>value</replaceable>
    </arg>
-    
+
    <arg>
     --cores <replaceable>number</replaceable>
    </arg>
-    
+
    <arg>
      <group choice="req">
        <arg choice="plain">
@@ -130,29 +134,33 @@
      </group>
      <replaceable>number</replaceable>
    </arg>
-    
+
+   <arg>
+    --debug
+   </arg>
+
    <arg>
     --keep-failed
    </arg>
-    
+
    <arg>
     --keep-going
    </arg>
-    
+
    <arg>
     --show-trace
    </arg>
-    
+
    <arg>
     --(no-)substitute
    </arg>
-    
+
    <arg>
-    <group choice="req"> 
+    <group choice="req">
     <arg choice="plain">
      -v
     </arg>
-     
+
     <arg choice="plain">
      --verbose
     </arg>
@@ -246,6 +254,18 @@
       </para>
      </listitem>
     </varlistentry>
+    <varlistentry>
+     <term>
+      <option>option <replaceable>option.name</replaceable></option>
+     </term>
+     <listitem>
+      <para>
+       Inspect the given option name in the home configuration, like <citerefentry>
+       <refentrytitle>nixos-option</refentrytitle>
+       <manvolnum>8</manvolnum> </citerefentry>.
+      </para>
+     </listitem>
+    </varlistentry>
     <varlistentry>
      <term>
       <option>packages</option>
@@ -456,6 +476,18 @@
      </para>
     </listitem>
    </varlistentry>
+   <varlistentry>
+    <term>
+     <option>--debug</option>
+    </term>
+    <listitem>
+     <para>
+      Passed on to <citerefentry>
+      <refentrytitle>nix-build</refentrytitle>
+      <manvolnum>1</manvolnum> </citerefentry>.
+     </para>
+    </listitem>
+   </varlistentry>
    <varlistentry>
     <term>
      <option>--keep-failed</option>

doc/release-notes/release-notes.adoc

@@ -6,6 +6,8 @@ This section lists the release notes for stable versions of Home Manager and the
 
 :leveloffset: 1
 
+include::rl-2111.adoc[]
+
 include::rl-2105.adoc[]
 
 include::rl-2009.adoc[]

doc/release-notes/rl-2105.adoc

@@ -1,8 +1,7 @@
 [[sec-release-21.05]]
 == Release 21.05
 
-This is the current unstable branch and the information in this
-section is therefore not final.
+The 21.05 release branch became the stable branch in May, 2021.
 
 [[sec-release-21.05-highlights]]
 === Highlights

doc/release-notes/rl-2111.adoc

@@ -0,0 +1,43 @@
+[[sec-release-21.11]]
+== Release 21.11
+
+This is the current unstable branch and the information in this
+section is therefore not final.
+
+[[sec-release-21.11-highlights]]
+=== Highlights
+
+This release has the following notable changes:
+
+* All Home Manager modules are now loaded on all platforms. With this
+change you will get a more descriptive error message if you attempt to
+enable a module that is incompatible with the host platform.
++
+Previously, modules that were platform specific would only be loaded
+on that particular platform. For example, a module defining a
+https://systemd.io/[systemd] service would only be loaded when the
+host platform was Linux. This reduced evaluation times, simplified the
+generated documentation, and made it impossible to accidentally use
+modules that do not support the host platform.
++
+While the above benefits are quite nice, avoiding module loads also
+brings a few problems. For example, the
+https://nix-community.github.io/home-manager/[public documentation]
+will only show the options available for Linux hosts and the
+documentation cannot make references to options within modules that
+are unavailable on some hosts. Finally, users who wish to use the same
+configuration file for different platforms cannot do so, even if the
+platform incompatible options are unused.
++
+Ultimately, the benefits of loading all modules won and the behavior
+has now changed. For associated discussion see
+https://github.com/nix-community/home-manager/issues/1906[issue #1906].
+
+[[sec-release-21.11-state-version-changes]]
+=== State Version Changes
+
+The state version in this release includes the changes below. These
+changes are only active if the `home.stateVersion` option is set to
+"21.11" or later.
+
+* Nothing has happened.

format

@@ -26,25 +26,15 @@ find . -name '*.nix' \
   ! -path ./modules/lib/file-type.nix \
   ! -path ./modules/manual.nix \
   ! -path ./modules/misc/news.nix \
-  ! -path ./modules/misc/nixpkgs.nix \
-  ! -path ./modules/misc/xdg.nix \
-  ! -path ./modules/modules.nix \
   ! -path ./modules/programs/bash.nix \
-  ! -path ./modules/programs/firefox.nix \
   ! -path ./modules/programs/gpg.nix \
   ! -path ./modules/programs/ssh.nix \
   ! -path ./modules/programs/tmux.nix \
   ! -path ./modules/programs/zsh.nix \
   ! -path ./modules/services/gpg-agent.nix \
   ! -path ./modules/services/mpd.nix \
-  ! -path ./modules/services/sxhkd.nix \
-  ! -path ./modules/systemd.nix \
   ! -path ./nix-darwin/default.nix \
   ! -path ./tests/default.nix \
   ! -path ./tests/modules/home-environment/session-variables.nix \
   ! -path ./tests/modules/programs/gpg/override-defaults.nix \
-  ! -path ./tests/modules/programs/zsh/session-variables.nix \
-  ! -path ./tests/modules/services/sxhkd/service.nix \
-  ! -path ./tests/modules/systemd/services.nix \
-  ! -path ./tests/modules/systemd/session-variables.nix \
   -exec nixfmt $CHECK_ARG {} +

home-manager/completion.bash

@@ -62,6 +62,7 @@
 # generations
 # help
 # news
+# option
 # packages
 # remove-generations
 # switch
@@ -86,6 +87,7 @@
 #
 #   help
 #   edit
+#   option
 #   build
 #   switch
 #   generations
@@ -131,6 +133,9 @@
 #
 #   edit         Open the home configuration in $EDITOR
 #
+#   option OPTION.NAME
+#                Inspect configuration option named OPTION.NAME.
+#
 #   build        Build configuration into result directory
 #
 #   switch       Build and activate configuration
@@ -278,15 +283,15 @@ _home-manager_completions ()
     #--------------------------#
 
     local Subcommands
-    Subcommands=( "help" "edit" "build" "instantiate" "switch" "generations" "remove-generations" "expire-generations" "packages" "news" "uninstall" )
+    Subcommands=( "help" "edit" "option" "build" "instantiate" "switch" "generations" "remove-generations" "expire-generations" "packages" "news" "uninstall" )
 
     # ^ « home-manager »'s subcommands.
 
     #--------------------------#
 
     local Options
-    Options=( "-f" "--file" "-b" "-A" "-I" "-h" "--help" "-n" "--dry-run" "-v" "--verbose" "--show-trace" \
-              "-j" "--max-jobs" )
+    Options=( "-f" "--file" "-b" "-A" "-I" "-h" "--help" "-n" "--dry-run" "-v" "--verbose" \
+              "--cores" "--debug" "--keep-failed" "--keep-going" "-j" "--max-jobs" "--no-substitute" "--show-trace" "--substitute")
 
     # ^ « home-manager »'s options.
 
@@ -354,4 +359,4 @@ _home-manager_completions ()
 
 complete -F _home-manager_completions -o default home-manager
 
-#complete -W "help edit build switch generations remove-generations expire-generations packages news" home-manager
+#complete -W "help edit option build switch generations remove-generations expire-generations packages news" home-manager

home-manager/completion.fish

@@ -0,0 +1,62 @@
+#!/bin/env fish
+##################################################
+
+# « home-manager » command-line fish completion
+#
+# © 2021 "Ariel AxionL" <i at axionl dot me>
+#
+# MIT License
+#
+
+##################################################
+
+### Functions
+function __home_manager_generations --description "Get all generations"
+    for i in (home-manager generations)
+        set -l split (string split " " $i)
+        set -l gen_id $split[5]
+        set -l gen_datetime $split[1..2]
+        set -l gen_hash (string match -r '\w{32}' $i)
+        echo $gen_id\t$gen_datetime $gen_hash
+    end
+end
+
+
+### SubCommands
+complete -c home-manager -n "__fish_use_subcommand" -f -a "help" -d "Print home-manager help"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "edit" -d "Open the home configuration in $EDITOR"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "option" -d "Inspect configuration option"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "build" -d "Build configuration into result directory"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "instantiate" -d "Instantiate the configuration and print the resulting derivation"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "switch" -d "Build and activate configuration"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "generations" -d "List all home environment generations"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "packages" -d "List all packages installed in home-manager-path"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "news" -d "Show news entries in a pager"
+complete -c home-manager -n "__fish_use_subcommand" -f -a "uninstall" -d "Remove Home Manager"
+
+complete -c home-manager -n "__fish_use_subcommand" -x -a "remove-generations" -d "Remove indicated generations"
+complete -c home-manager -n "__fish_seen_subcommand_from remove-generations" -f -ka '(__home_manager_generations)'
+
+complete -c home-manager -n "__fish_use_subcommand" -x -a "expire-generations" -d "Remove generations older than TIMESTAMP"
+
+### Options
+complete -c home-manager -F -s f -l "file" -d "The home configuration file"
+complete -c home-manager -x -s A -d "Select an expression in the configuration file"
+complete -c home-manager -F -s I -d "Add a path to the Nix expression search path"
+complete -c home-manager -F -l "flake" -d "Use home-manager configuration at specified flake-uri"
+complete -c home-manager -F -s b -d "Move existing files to new path rather than fail"
+complete -c home-manager -f -s v -l "verbose" -d "Verbose output"
+complete -c home-manager -f -s n -l "dry-run" -d "Do a dry run, only prints what actions would be taken"
+complete -c home-manager -f -s h -l "help" -d "Print this help"
+
+complete -c home-manager -x -l "arg" -d "Override inputs passed to home-manager.nix"
+complete -c home-manager -x -l "argstr" -d "Like --arg but the value is a string"
+complete -c home-manager -x -l "cores" -d "Threads per job (e.g. -j argument to make)"
+complete -c home-manager -x -l "debug"
+complete -c home-manager -f -l "keep-failed" -d "Keep temporary directory used by failed builds"
+complete -c home-manager -f -l "keep-going" -d "Keep going in case of failed builds"
+complete -c home-manager -x -s j -l "max-jobs" -d "Max number of build jobs in parallel"
+complete -c home-manager -x -l "option" -d "Set Nix configuration option"
+complete -c home-manager -f -l "show-trace" -d "Print stack trace of evaluation errors"
+complete -c home-manager -f -l "substitute"
+complete -c home-manager -f -l "no-substitute"

home-manager/completion.zsh

@@ -7,6 +7,7 @@ _arguments \
   '-I[search path]:PATH:_files -/' \
   '-b[backup files]:EXT:()' \
   '--cores[cores]:NUM:()' \
+  '--debug[debug]' \
   '--keep-failed[keep failed]' \
   '--keep-going[keep going]' \
   '(-h --help)'{--help,-h}'[help]' \
@@ -24,6 +25,7 @@ case "$state" in
     _values 'command' \
       'help[help]' \
       'edit[edit]' \
+      'option[inspect option]' \
       'build[build]' \
       'switch[switch]' \
       'generations[list generations]' \
@@ -42,11 +44,14 @@ case "$state" in
       build|switch)
         _arguments \
           '--cores[cores]:NUM:()' \
+          '--debug[debug]' \
           '--keep-failed[keep failed]' \
           '--keep-going[keep going]' \
           '--max-jobs[max jobs]:NUM:()' \
+          '--no-substitute[no substitute]' \
           '--option[option]:NAME VALUE:()' \
-          '--show-trace[show trace]'
+          '--show-trace[show trace]' \
+          '--substitute[substitute]'
         ;;
     esac
 esac

home-manager/default.nix

@@ -1,4 +1,6 @@
-{ runCommand, lib, bash, coreutils, findutils, gnused, less
+{ runCommand, lib, bash, callPackage, coreutils, findutils, gnused, less
+# used for pkgs.path for nixos-option
+, pkgs
 
 # Extra path to Home Manager. If set then this path will be tried
 # before `$HOME/.config/nixpkgs/home-manager` and
@@ -9,6 +11,9 @@ let
 
   pathStr = if path == null then "" else path;
 
+  nixos-option = pkgs.nixos-option or (callPackage
+    (pkgs.path + "/nixos/modules/installer/tools/nixos-option") { });
+
 in runCommand "home-manager" {
   preferLocalBuild = true;
   allowSubstitutes = false;
@@ -27,10 +32,13 @@ in runCommand "home-manager" {
     --subst-var-by findutils "${findutils}" \
     --subst-var-by gnused "${gnused}" \
     --subst-var-by less "${less}" \
+    --subst-var-by nixos-option "${nixos-option}" \
     --subst-var-by HOME_MANAGER_PATH '${pathStr}'
 
   install -D -m755 ${./completion.bash} \
     $out/share/bash-completion/completions/home-manager
   install -D -m755 ${./completion.zsh} \
     $out/share/zsh/site-functions/_home-manager
+  install -D -m755 ${./completion.fish} \
+    $out/share/fish/vendor_completions.d/home-manager.fish
 ''

home-manager/home-manager

@@ -1,7 +1,7 @@
 #!@bash@/bin/bash
 
 # Prepare to use tools from Nixpkgs.
-PATH=@coreutils@/bin:@findutils@/bin:@gnused@/bin:@less@/bin${PATH:+:}$PATH
+PATH=@coreutils@/bin:@findutils@/bin:@gnused@/bin:@less@/bin:@nixos-option@/bin${PATH:+:}$PATH
 
 set -euo pipefail
 
@@ -97,6 +97,46 @@ function setFlakeAttribute() {
     fi
 }
 
+function doInspectOption() {
+    setFlakeAttribute
+    if [[ -v FLAKE_CONFIG_URI ]]; then
+        errorEcho "Can't inspect options of a flake configuration"
+        exit 1
+    fi
+    setConfigFile
+    setHomeManagerNixPath
+
+    local extraArgs=("$@")
+
+    for p in "${EXTRA_NIX_PATH[@]}"; do
+        extraArgs=("${extraArgs[@]}" "-I" "$p")
+    done
+
+    if [[ -v VERBOSE ]]; then
+        extraArgs=("${extraArgs[@]}" "--show-trace")
+    fi
+
+    local HOME_MANAGER_CONFIG_NIX HOME_MANAGER_CONFIG_ATTRIBUTE_NIX
+    HOME_MANAGER_CONFIG_NIX=${HOME_MANAGER_CONFIG//'\'/'\\'}
+    HOME_MANAGER_CONFIG_NIX=${HOME_MANAGER_CONFIG_NIX//'"'/'\"'}
+    HOME_MANAGER_CONFIG_NIX=${HOME_MANAGER_CONFIG_NIX//$'\n'/$'\\n'}
+    HOME_MANAGER_CONFIG_ATTRIBUTE_NIX=${HOME_MANAGER_CONFIG_ATTRIBUTE//'\'/'\\'}
+    HOME_MANAGER_CONFIG_ATTRIBUTE_NIX=${HOME_MANAGER_CONFIG_ATTRIBUTE_NIX//'"'/'\"'}
+    HOME_MANAGER_CONFIG_ATTRIBUTE_NIX=${HOME_MANAGER_CONFIG_ATTRIBUTE_NIX//$'\n'/$'\\n'}
+    local modulesExpr
+    modulesExpr="let confPath = \"${HOME_MANAGER_CONFIG_NIX}\"; "
+    modulesExpr+="confAttr = \"${HOME_MANAGER_CONFIG_ATTRIBUTE_NIX}\"; in "
+    modulesExpr+="(import <home-manager/modules> {"
+    modulesExpr+=" configuration = if confAttr == \"\" then confPath else (import confPath).\${confAttr};"
+    modulesExpr+=" pkgs = import <nixpkgs> {}; check = true; })"
+
+    nixos-option \
+        --options_expr "$modulesExpr.options" \
+        --config_expr "$modulesExpr.config" \
+        "${extraArgs[@]}" \
+        "${PASSTHROUGH_OPTS[@]}"
+}
+
 function doInstantiate() {
     setFlakeAttribute
     if [[ -v FLAKE_CONFIG_URI ]]; then
@@ -473,6 +513,7 @@ function doHelp() {
     echo
     echo "  --arg(str) NAME VALUE    Override inputs passed to home-manager.nix"
     echo "  --cores NUM"
+    echo "  --debug"
     echo "  --keep-failed"
     echo "  --keep-going"
     echo "  -j, --max-jobs NUM"
@@ -486,6 +527,9 @@ function doHelp() {
     echo
     echo "  edit         Open the home configuration in \$EDITOR"
     echo
+    echo "  option OPTION.NAME"
+    echo "               Inspect configuration option named OPTION.NAME."
+    echo
     echo "  build        Build configuration into result directory"
     echo
     echo "  instantiate  Instantiate the configuration and print the resulting derivation"
@@ -523,7 +567,7 @@ while [[ $# -gt 0 ]]; do
     opt="$1"
     shift
     case $opt in
-        build|instantiate|edit|expire-generations|generations|help|news|packages|remove-generations|switch|uninstall)
+        build|instantiate|option|edit|expire-generations|generations|help|news|packages|remove-generations|switch|uninstall)
             COMMAND="$opt"
             ;;
         -A)
@@ -572,7 +616,7 @@ while [[ $# -gt 0 ]]; do
             PASSTHROUGH_OPTS+=("$opt" "$1")
             shift
             ;;
-        --keep-failed|--keep-going|--show-trace\
+        --debug|--keep-failed|--keep-going|--show-trace\
             |--substitute|--no-substitute)
             PASSTHROUGH_OPTS+=("$opt")
             ;;
@@ -580,12 +624,12 @@ while [[ $# -gt 0 ]]; do
             export VERBOSE=1
             ;;
         --version)
-            echo 21.05
+            echo 21.11
             exit 0
             ;;
         *)
             case $COMMAND in
-                expire-generations|remove-generations)
+                expire-generations|remove-generations|option)
                     COMMAND_ARGS+=("$opt")
                     ;;
                 *)
@@ -630,6 +674,9 @@ case $COMMAND in
             doExpireGenerations "${COMMAND_ARGS[@]}"
         fi
         ;;
+    option)
+        doInspectOption "${COMMAND_ARGS[@]}"
+        ;;
     packages)
         doListPackages
         ;;

home-manager/install.nix

@@ -45,7 +45,7 @@ runCommand "home-manager-install" {
       # You can update Home Manager without changing this value. See
       # the Home Manager release notes for a list of state version
       # changes in each release.
-      home.stateVersion = "21.05";
+      home.stateVersion = "21.11";
     }
     EOF
     fi

modules/accounts/email.nix

@@ -332,7 +332,10 @@ let
       (mkIf (config.flavor == "gmail.com") {
         userName = mkDefault config.address;
 
-        imap = { host = "imap.gmail.com"; };
+        imap = {
+          host = "imap.gmail.com";
+          port = 993;
+        };
 
         smtp = {
           host = "smtp.gmail.com";

modules/config/i18n.nix

@@ -36,7 +36,7 @@ let
 in {
   meta.maintainers = with maintainers; [ midchildan ];
 
-  config = {
+  config = mkIf pkgs.hostPlatform.isLinux {
     # For shell sessions.
     home.sessionVariables = localeVars;
 

modules/files.nix

@@ -39,6 +39,28 @@ in
   };
 
   config = {
+    assertions = [(
+      let
+        dups =
+          attrNames
+            (filterAttrs (n: v: v > 1)
+            (foldAttrs (acc: v: acc + v) 0
+            (mapAttrsToList (n: v: { ${v.target} = 1; }) cfg)));
+        dupsStr = concatStringsSep ", " dups;
+      in {
+        assertion = dups == [];
+        message = ''
+          Conflicting managed target files: ${dupsStr}
+
+          This may happen, for example, if you have a configuration similar to
+
+              home.file = {
+                conflict1 = { source = ./foo.nix; target = "baz"; };
+                conflict2 = { source = ./bar.nix; target = "baz"; };
+              }'';
+      })
+    ];
+
     lib.file.mkOutOfStoreSymlink = path:
       let
         pathStr = toString path;
@@ -53,7 +75,7 @@ in
         # Paths that should be forcibly overwritten by Home Manager.
         # Caveat emptor!
         forcedPaths =
-          concatMapStringsSep " " (p: ''"$HOME/${p}"'')
+          concatMapStringsSep " " (p: ''"$HOME"/${escapeShellArg p}'')
             (mapAttrsToList (n: v: v.target)
             (filterAttrs (n: v: v.force) cfg));
 
@@ -62,7 +84,7 @@ in
 
           # A symbolic link whose target path matches this pattern will be
           # considered part of a Home Manager generation.
-          homeFilePattern="$(readlink -e "${builtins.storeDir}")/*-home-manager-files/*"
+          homeFilePattern="$(readlink -e ${escapeShellArg builtins.storeDir})/*-home-manager-files/*"
 
           forcedPaths=(${forcedPaths})
 
@@ -140,12 +162,13 @@ in
     # source and target generation.
     home.activation.linkGeneration = hm.dag.entryAfter ["writeBoundary"] (
       let
-        link = pkgs.writeText "link" ''
-          newGenFiles="$1"
-          shift
+        link = pkgs.writeShellScript "link" ''
+          rootPath="$1"
+          newGenFiles="$2"
+          shift 2
           for sourcePath in "$@" ; do
             relativePath="''${sourcePath#$newGenFiles/}"
-            targetPath="$HOME/$relativePath"
+            targetPath="$rootPath/$relativePath"
             if [[ -e "$targetPath" && ! -L "$targetPath" && -n "$HOME_MANAGER_BACKUP_EXT" ]] ; then
               backup="$targetPath.$HOME_MANAGER_BACKUP_EXT"
               $DRY_RUN_CMD mv $VERBOSE_ARG "$targetPath" "$backup" || errorEcho "Moving '$targetPath' failed!"
@@ -155,17 +178,18 @@ in
           done
         '';
 
-        cleanup = pkgs.writeText "cleanup" ''
+        cleanup = pkgs.writeShellScript "cleanup" ''
           . ${./lib-bash/color-echo.sh}
 
           # A symbolic link whose target path matches this pattern will be
           # considered part of a Home Manager generation.
-          homeFilePattern="$(readlink -e "${builtins.storeDir}")/*-home-manager-files/*"
+          homeFilePattern="$(readlink -e ${escapeShellArg builtins.storeDir})/*-home-manager-files/*"
 
-          newGenFiles="$1"
-          shift 1
+          rootPath="$1"
+          newGenFiles="$2"
+          shift 2
           for relativePath in "$@" ; do
-            targetPath="$HOME/$relativePath"
+            targetPath="$rootPath/$relativePath"
             if [[ -e "$newGenFiles/$relativePath" ]] ; then
               $VERBOSE_ECHO "Checking $targetPath: exists"
             elif [[ ! "$(readlink "$targetPath")" == $homeFilePattern ]] ; then
@@ -177,7 +201,8 @@ in
               # Recursively delete empty parent directories.
               targetDir="$(dirname "$relativePath")"
               if [[ "$targetDir" != "." ]] ; then
-                pushd "$HOME" > /dev/null
+                # TODO
+                # pushd "$HOME" > /dev/null
 
                 # Call rmdir with a relative path excluding $HOME.
                 # Otherwise, it might try to delete $HOME and exit
@@ -186,7 +211,7 @@ in
                     -p --ignore-fail-on-non-empty \
                     "$targetDir"
 
-                popd > /dev/null
+                # popd > /dev/null
               fi
             fi
           done
@@ -194,12 +219,17 @@ in
       in
         ''
           function linkNewGen() {
-            echo "Creating home file links in $HOME"
+            echo "Creating home file links"
+
+            local rootPath=
+            if [[ $newGenLayoutVersion -eq 0 ]] ; then
+              rootPath="$HOME"
+            fi
 
             local newGenFiles
             newGenFiles="$(readlink -e "$newGenPath/home-files")"
             find "$newGenFiles" \( -type f -or -type l \) \
-              -exec bash ${link} "$newGenFiles" {} +
+              -exec bash ${link} "$rootPath" "$newGenFiles" {} +
           }
 
           function cleanOldGen() {
@@ -207,17 +237,35 @@ in
               return
             fi
 
-            echo "Cleaning up orphan links from $HOME"
+            echo "Cleaning up orphan links"
 
             local newGenFiles oldGenFiles
             newGenFiles="$(readlink -e "$newGenPath/home-files")"
             oldGenFiles="$(readlink -e "$oldGenPath/home-files")"
 
-            # Apply the cleanup script on each leaf in the old
-            # generation. The find command below will print the
-            # relative path of the entry.
-            find "$oldGenFiles" '(' -type f -or -type l ')' -printf '%P\0' \
-              | xargs -0 bash ${cleanup} "$newGenFiles"
+            # When transitioning from layout 0 to 1 we need to prefix all old
+            # paths with the home directory. Conversely, if we ever go from
+            # layout 1 to 0 we need to "subtract" the home directory from the
+            # old generation path, this is done by appending an "antiprefix" to
+            # the layout 1 paths.
+            local prefix= antiprefix=
+            if [[ $oldGenLayoutVersion -eq 0 && $newGenLayoutVersion -ge 1 ]] ; then
+              prefix="''${HOME#/}/"
+            elif [[ $oldGenLayoutVersion -ge 1 && $newGenLayoutVersion -eq 0 ]] ; then
+              antiprefix="/$HOME"
+            fi
+
+            local rootPath=
+            if [[ $newGenLayoutVersion -eq 0 ]] ; then
+              rootPath="$HOME"
+            fi
+
+            $VERBOSE_ECHO "Orphan link cleanup uses prefix=$prefix antiprefix=$antiprefix rootPath=$rootPath"
+
+            # Apply the cleanup script on each leaf in the old generation. The
+            # find command below will print the relative path of the entry.
+            find "$oldGenFiles$antiprefix" '(' -type f -or -type l ')' -printf "$prefix%P\0" \
+              | xargs -0 bash ${cleanup} "$rootPath" "$newGenFiles"
           }
 
           cleanOldGen
@@ -235,18 +283,34 @@ in
     );
 
     home.activation.checkFilesChanged = hm.dag.entryBefore ["linkGeneration"] (
-      ''
+      let
+        homeDirArg = escapeShellArg homeDirectory;
+      in ''
+        function _cmp() {
+          if [[ -d $1 && -d $2 ]]; then
+            diff -rq "$1" "$2" &> /dev/null
+          else
+            cmp --quiet "$1" "$2"
+          fi
+        }
         declare -A changedFiles
-      '' + concatMapStrings (v: ''
-        cmp --quiet "${sourceStorePath v}" "${homeDirectory}/${v.target}" \
-          && changedFiles["${v.target}"]=0 \
-          || changedFiles["${v.target}"]=1
-      '') (filter (v: v.onChange != "") (attrValues cfg))
+      '' + concatMapStrings (v:
+        let
+          sourceArg = escapeShellArg (sourceStorePath v);
+          targetArg = escapeShellArg v.target;
+        in ''
+          _cmp ${sourceArg} ${homeDirArg}/${targetArg} \
+            && changedFiles[${targetArg}]=0 \
+            || changedFiles[${targetArg}]=1
+        '') (filter (v: v.onChange != "") (attrValues cfg))
+      + ''
+        unset -f _cmp
+      ''
     );
 
     home.activation.onFilesChange = hm.dag.entryAfter ["linkGeneration"] (
       concatMapStrings (v: ''
-        if [[ ${"$\{changedFiles"}["${v.target}"]} -eq 1 ]]; then
+        if [[ ''${changedFiles[${escapeShellArg v.target}]} -eq 1 ]]; then
           ${v.onChange}
         fi
       '') (filter (v: v.onChange != "") (attrValues cfg))
@@ -254,12 +318,10 @@ in
 
     # Symlink directories and files that have the right execute bit.
     # Copy files that need their execute bit changed.
-    home-files = pkgs.runCommand
+    home-files = pkgs.runCommandLocal
       "home-manager-files"
       {
         nativeBuildInputs = [ pkgs.xorg.lndir ];
-        preferLocalBuild = true;
-        allowSubstitutes = false;
       }
       (''
         mkdir -p $out
@@ -273,6 +335,15 @@ in
           local executable="$3"
           local recursive="$4"
 
+          # If the target already exists then we have a collision. Note, this
+          # should not happen due to the assertion found in the 'files' module.
+          # We therefore simply log the conflict and otherwise ignore it, mainly
+          # to make the `files-target-config` test work as expected.
+          if [[ -e "$realOut/$relTarget" ]]; then
+            echo "File conflict for file '$relTarget'" >&2
+            return
+          fi
+
           # Figure out the real absolute path to the target.
           local target
           target="$(realpath -m "$realOut/$relTarget")"

modules/home-environment.nix

@@ -373,6 +373,16 @@ in
       description = "The package containing the complete activation script.";
     };
 
+    home.extraActivationPath = mkOption {
+      internal = true;
+      type = types.listOf types.package;
+      default = [ ];
+      description = ''
+        Extra packages to add to <envar>PATH</envar> within the activation
+        script.
+      '';
+    };
+
     home.extraBuilderCommands = mkOption {
       type = types.lines;
       default = "";
@@ -390,6 +400,21 @@ in
         Extra commands to run in the Home Manager profile builder.
       '';
     };
+
+    home.enableNixpkgsReleaseCheck = mkOption {
+      type = types.bool;
+      default = true;
+      description = ''
+        Determines whether to check for release version mismatch between Home
+        Manager and Nixpkgs. Using mismatched versions is likely to cause errors
+        and unexpected behavior. It is therefore highly recommended to use a
+        release of Home Manager than corresponds with your chosen release of
+        Nixpkgs.
+        </para><para>
+        When this option is enabled and a mismatch is detected then a warning
+        will be printed when the user configuration is being built.
+      '';
+    };
   };
 
   config = {
@@ -404,6 +429,31 @@ in
       }
     ];
 
+    warnings =
+      let
+        hmRelease = fileContents ../.release;
+        nixpkgsRelease = pkgs.lib.trivial.release;
+        releaseMismatch =
+          config.home.enableNixpkgsReleaseCheck
+          && hmRelease != nixpkgsRelease;
+      in
+        optional releaseMismatch ''
+          You are using
+
+            Home Manager version ${hmRelease} and
+            Nixpkgs version ${nixpkgsRelease}.
+
+          Using mismatched versions is likely to cause errors and unexpected
+          behavior. It is therefore highly recommended to use a release of Home
+          Manager than corresponds with your chosen release of Nixpkgs.
+
+          If you insist then you can disable this warning by adding
+
+            home.enableNixpkgsReleaseCheck = false;
+
+          to your configuration.
+        '';
+
     home.username =
       mkIf (versionOlder config.home.stateVersion "20.09")
         (mkDefault (builtins.getEnv "USER"));
@@ -530,15 +580,17 @@ in
 
         # Programs that always should be available on the activation
         # script's PATH.
-        activationBinPaths = lib.makeBinPath [
-          pkgs.bash
-          pkgs.coreutils
-          pkgs.diffutils        # For `cmp` and `diff`.
-          pkgs.findutils
-          pkgs.gnugrep
-          pkgs.gnused
-          pkgs.ncurses          # For `tput`.
-        ]
+        activationBinPaths = lib.makeBinPath (
+          [
+            pkgs.bash
+            pkgs.coreutils
+            pkgs.diffutils        # For `cmp` and `diff`.
+            pkgs.findutils
+            pkgs.gnugrep
+            pkgs.gnused
+            pkgs.ncurses          # For `tput`.
+          ] ++ config.home.extraActivationPath
+        )
         + optionalString (!cfg.emptyActivationPath) "\${PATH:+:}$PATH";
 
         activationScript = pkgs.writeShellScript "activation-script" ''
@@ -570,6 +622,13 @@ in
             mkdir $out/bin
             ln -s $out/activate $out/bin/home-manager-generation
 
+            # The generation directory layout version.
+            #
+            # - Version 0 (also implied when file is missing) means
+            #   "legacy layout".
+            # - Version 1 adds full home file paths.
+            echo 0 > $out/version
+
             substituteInPlace $out/activate \
               --subst-var-by GENERATION_DIR $out
 

modules/i18n/input-method/default.nix

@@ -0,0 +1,106 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+let
+
+  cfg = config.i18n.inputMethod;
+
+  gtk2Cache = pkgs.runCommandLocal "gtk2-immodule.cache" {
+    buildInputs = [ pkgs.gtk2 cfg.package ];
+  } ''
+    mkdir -p $out/etc/gtk-2.0/
+    GTK_PATH=${cfg.package}/lib/gtk-2.0/ \
+      gtk-query-immodules-2.0 > $out/etc/gtk-2.0/immodules.cache
+  '';
+
+  gtk3Cache = pkgs.runCommandLocal "gtk3-immodule.cache" {
+    buildInputs = [ pkgs.gtk3 cfg.package ];
+  } ''
+    mkdir -p $out/etc/gtk-3.0/
+    GTK_PATH=${cfg.package}/lib/gtk-3.0/ \
+      gtk-query-immodules-3.0 > $out/etc/gtk-3.0/immodules.cache
+  '';
+
+in {
+  imports =
+    [ ./fcitx.nix ./fcitx5.nix ./hime.nix ./kime.nix ./nabi.nix ./uim.nix ];
+
+  options.i18n = {
+    inputMethod = {
+      enabled = mkOption {
+        type = types.nullOr
+          (types.enum [ "fcitx" "fcitx5" "nabi" "uim" "hime" "kime" ]);
+        default = null;
+        example = "fcitx";
+        description = ''
+          Select the enabled input method. Input methods is a software to input
+          symbols that are not available on standard input devices.
+          </para><para>
+          Input methods are specially used to input Chinese, Japanese and Korean
+          characters.
+          </para><para>
+          Currently the following input methods are available in Home Manager:
+
+          <variablelist>
+          <varlistentry>
+            <term><literal>fcitx</literal></term>
+            <listitem><para>
+              A customizable lightweight input method
+              extra input engines can be added using
+              <literal>i18n.inputMethod.fcitx.engines</literal>.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>fcitx5</literal></term>
+            <listitem><para>
+              The next generation of fcitx,
+              addons (including engines, dictionaries, skins) can be added using
+              <literal>i18n.inputMethod.fcitx5.addons</literal>.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>nabi</literal></term>
+            <listitem><para>
+              A Korean input method based on XIM. Nabi doesn't support Qt 5.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>uim</literal></term>
+            <listitem><para>
+              The universal input method, is a library with a XIM bridge.
+              uim mainly support Chinese, Japanese and Korean.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>hime</literal></term>
+            <listitem><para>An extremely easy-to-use input method framework.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>kime</literal></term>
+            <listitem><para>A Korean IME.</para></listitem>
+          </varlistentry>
+          </variablelist>
+        '';
+      };
+
+      package = mkOption {
+        internal = true;
+        type = types.nullOr types.path;
+        default = null;
+        description = ''
+          The input method method package.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (cfg.enabled != null) {
+    assertions = [
+      (hm.assertions.assertPlatform "i18n.inputMethod" pkgs platforms.linux)
+    ];
+
+    home.packages = [ cfg.package gtk2Cache gtk3Cache ];
+  };
+
+  meta.maintainers = with lib; [ hm.maintainers.kranzes ];
+}

modules/i18n/input-method/fcitx.nix

@@ -0,0 +1,50 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  cfg = config.i18n.inputMethod.fcitx;
+  fcitxPackage = pkgs.fcitx.override { plugins = cfg.engines; };
+  fcitxEngine = types.package // {
+    name = "fcitx-engine";
+    check = x:
+      types.package.check x && attrByPath [ "meta" "isFcitxEngine" ] false x;
+  };
+in {
+  options = {
+
+    i18n.inputMethod.fcitx = {
+      engines = mkOption {
+        type = with types; listOf fcitxEngine;
+        default = [ ];
+        example = literalExample "with pkgs.fcitx-engines; [ mozc hangul ]";
+        description = let
+          enginesDrv = filterAttrs (const isDerivation) pkgs.fcitx-engines;
+          engines = concatStringsSep ", "
+            (map (name: "<literal>${name}</literal>") (attrNames enginesDrv));
+        in "Enabled Fcitx engines. Available engines are: ${engines}.";
+      };
+    };
+
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "fcitx") {
+    i18n.inputMethod.package = fcitxPackage;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "fcitx";
+      QT_IM_MODULE = "fcitx";
+      XMODIFIERS = "@im=fcitx";
+    };
+
+    systemd.user.services.fcitx-daemon = {
+      Unit = {
+        Description = "Fcitx input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${fcitxPackage}/bin/fcitx";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/fcitx5.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  im = config.i18n.inputMethod;
+  cfg = im.fcitx5;
+  fcitx5Package = pkgs.fcitx5-with-addons.override { inherit (cfg) addons; };
+in {
+  options = {
+    i18n.inputMethod.fcitx5 = {
+      addons = mkOption {
+        type = with types; listOf package;
+        default = [ ];
+        example = literalExample "with pkgs; [ fcitx5-rime ]";
+        description = ''
+          Enabled Fcitx5 addons.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (im.enabled == "fcitx5") {
+    i18n.inputMethod.package = fcitx5Package;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "fcitx";
+      QT_IM_MODULE = "fcitx";
+      XMODIFIERS = "@im=fcitx";
+    };
+
+    systemd.user.services.fcitx5-daemon = {
+      Unit = {
+        Description = "Fcitx5 input method editor";
+        PartOf = [ "graphical-session.target" ];
+      };
+      Service.ExecStart = "${fcitx5Package}/bin/fcitx5";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/hime.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+
+with lib; {
+  config = mkIf (config.i18n.inputMethod.enabled == "hime") {
+    i18n.inputMethod.package = pkgs.hime;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "hime";
+      QT_IM_MODULE = "hime";
+      XMODIFIERS = "@im=hime";
+    };
+
+    systemd.user.services.hime-daemon = {
+      Unit = {
+        Description = "Hime input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${pkgs.hime}/bin/hime";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/kime.nix

@@ -0,0 +1,58 @@
+{ config, pkgs, lib, generators, ... }:
+with lib;
+let
+  cfg = config.i18n.inputMethod.kime;
+  yamlFormat = pkgs.formats.yaml { };
+in {
+  options = {
+    i18n.inputMethod.kime = {
+      config = mkOption {
+        type = yamlFormat.type;
+        default = { };
+        example = literalExample ''
+          {
+            daemon = {
+              modules = ["Xim" "Indicator"];
+            };
+
+            indicator = {
+              icon_color = "White";
+            };
+
+            engine = {
+              hangul = {
+                layout = "dubeolsik";
+              };
+            };
+          }
+        '';
+        description = ''
+          kime configuration. Refer to
+          <link xlink:href="https://github.com/Riey/kime/blob/develop/docs/CONFIGURATION.md"/>
+          for details on supported values.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "kime") {
+    i18n.inputMethod.package = pkgs.kime;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "kime";
+      QT_IM_MODULE = "kime";
+      XMODIFIERS = "@im=kime";
+    };
+
+    xdg.configFile."kime/config.yaml".text =
+      replaceStrings [ "\\\\" ] [ "\\" ] (builtins.toJSON cfg.config);
+
+    systemd.user.services.kime-daemon = {
+      Unit = { Description = "Kime input method editor"; };
+      PartOf = [ "graphical-session.target" ];
+      Service.ExecStart = "${pkgs.kime}/bin/kime";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/nabi.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+
+with lib; {
+  config = mkIf (config.i18n.inputMethod.enabled == "nabi") {
+    i18n.inputMethod.package = pkgs.nabi;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "nabi";
+      QT_IM_MODULE = "nabi";
+      XMODIFIERS = "@im=nabi";
+    };
+
+    systemd.user.services.nabi-daemon = {
+      Unit = {
+        Description = "Nabi input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${pkgs.nabi}/bin/nabi";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/uim.nix

@@ -0,0 +1,45 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let cfg = config.i18n.inputMethod.uim;
+in {
+  options = {
+
+    i18n.inputMethod.uim = {
+      toolbar = mkOption {
+        type = types.enum [ "gtk" "gtk3" "gtk-systray" "gtk3-systray" "qt4" ];
+        default = "gtk";
+        example = "gtk-systray";
+        description = ''
+          Selected UIM toolbar.
+        '';
+      };
+    };
+
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "uim") {
+    i18n.inputMethod.package = pkgs.uim;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "uim";
+      QT_IM_MODULE = "uim";
+      XMODIFIERS = "@im=uim";
+    };
+
+    systemd.user.services.uim-daemon = {
+      Unit = {
+        Description = "Uim input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = toString
+        (pkgs.writeShellScript "start-uim-xim-and-uim-toolbar" ''
+          ${pkgs.uim}/bin/uim-xim &
+          ${pkgs.uim}/bin/uim-toolbar-${cfg.toolbar}
+        '');
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/lib-bash/activation-init.sh

@@ -5,9 +5,17 @@ function setupVars() {
     local profilesPath="$nixStateDir/profiles/per-user/$USER"
     local gcPath="$nixStateDir/gcroots/per-user/$USER"
 
-    genProfilePath="$profilesPath/home-manager"
-    newGenPath="@GENERATION_DIR@";
-    newGenGcPath="$gcPath/current-home"
+    declare -gr genProfilePath="$profilesPath/home-manager"
+    declare -gr newGenPath="@GENERATION_DIR@";
+    declare -gr newGenGcPath="$gcPath/current-home"
+
+    declare -g newGenLayoutVersion
+    if [[ -f $newGenPath/version ]]; then
+        newGenLayoutVersion=$(< "$newGenPath/version")
+    else
+        newGenLayoutVersion=0
+    fi
+    readonly newGenLayoutVersion
 
     local greatestGenNum
     greatestGenNum=$( \
@@ -23,7 +31,14 @@ function setupVars() {
     fi
 
     if [[ -e $profilesPath/home-manager ]] ; then
+        declare -g oldGenPath oldGenLayoutVersion
         oldGenPath="$(readlink -e "$profilesPath/home-manager")"
+        if [[ -f $oldGenPath/version ]]; then
+            oldGenLayoutVersion=$(< "$oldGenPath/version")
+        else
+            oldGenLayoutVersion=0
+        fi
+        readonly oldGenPath oldGenLayoutVersion
     fi
 
     $VERBOSE_ECHO "Sanity checking oldGenNum and oldGenPath"

modules/lib/assertions.nix

@@ -0,0 +1,14 @@
+{ lib }:
+
+{
+  assertPlatform = module: pkgs: platforms: {
+    assertion = lib.elem pkgs.stdenv.hostPlatform.system platforms;
+    message = let
+      platformsStr = lib.concatStringsSep "\n"
+        (map (p: "  - ${p}") (lib.sort (a: b: a < b) platforms));
+    in ''
+      The module ${module} does not support your platform. It only supports
+
+      ${platformsStr}'';
+  };
+}

modules/lib/default.nix

@@ -16,6 +16,8 @@ rec {
         entryBefore = d.dagEntryBefore;
       };
 
+  assertions = import ./assertions.nix { inherit lib; };
+
   gvariant = import ./gvariant.nix { inherit lib; };
   maintainers = import ./maintainers.nix;
   strings = import ./strings.nix { inherit lib; };

modules/lib/file-type.nix

@@ -82,6 +82,9 @@ with lib;
             generations. The script will be run
             <emphasis>after</emphasis> the new files have been linked
             into place.
+            </para><para>
+            Note, this code is always run when <literal>recursive</literal> is
+            enabled.
           '';
         };
 

modules/lib/maintainers.nix

@@ -25,6 +25,12 @@
     github = "cwyc";
     githubId = 16950437;
   };
+  chisui = {
+    name = "Philipp Dargel";
+    email = "chisui@users.noreply.github.com";
+    github = "chisui";
+    githubId = 4526429;
+  };
   olmokramer = {
     name = "Olmo Kramer";
     email = "olmokramer@users.noreply.github.com";
@@ -37,6 +43,16 @@
     github = "kalhauge";
     githubId = 1182166;
   };
+  kamadorueda = {
+    name = "Kevin Amado";
+    email = "kamadorueda@gmail.com";
+    github = "kamadorueda";
+    githubId = 47480384;
+    keys = [{
+      longkeyid = "rsa4096/0x04D0CEAF916A9A40";
+      fingerprint = "2BE3 BAFD 793E A349 ED1F  F00F 04D0 CEAF 916A 9A40";
+    }];
+  };
   kubukoz = {
     name = "Jakub Kozłowski";
     email = "kubukoz@users.noreply.github.com";
@@ -87,4 +103,22 @@
     githubId = 12465195;
     name = "Bruno BELANYI";
   };
+  malvo = {
+    email = "malte@malvo.org";
+    github = "malte-v";
+    githubId = 34393802;
+    name = "Malte Voos";
+  };
+  kranzes = {
+    email = "personal@ilanjoselevich.com";
+    github = "Kranzes";
+    githubId = 56614642;
+    name = "Ilan Joselevich";
+  };
+  mager = {
+    email = "andreas@mager.eu";
+    github = "AndreasMager";
+    githubId = 5646732;
+    name = "Andreas Mager";
+  };
 }

modules/misc/gtk.nix

@@ -33,7 +33,7 @@ let
       package = mkOption {
         type = types.nullOr types.package;
         default = null;
-        example = literalExample "pkgs.gnome3.gnome_themes_standard";
+        example = literalExample "pkgs.gnome.gnome_themes_standard";
         description = ''
           Package providing the theme. This package will be installed
           to your profile. If <literal>null</literal> then the theme

modules/misc/news.nix

@@ -2047,6 +2047,108 @@ in
           configuration file.
         '';
       }
+
+      {
+        time = "2021-05-10T20:41:44+00:00";
+        message = ''
+          A new module is available: 'programs.rbw'.
+        '';
+      }
+
+      {
+        time = "2021-05-30T15:22:10+00:00";
+        message = ''
+          A new module is available: 'programs.piston-cli'.
+        '';
+      }
+
+      {
+        time = "2021-06-02T04:24:10+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.xidlehook'.
+        '';
+      }
+
+      {
+        time = "2021-06-07T20:44:00+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.pantalaimon'.
+        '';
+      }
+
+      {
+        time = "2021-06-12T05:00:22+00:00";
+        message = ''
+          A new module is available: 'programs.mangohud'.
+        '';
+      }
+
+      {
+        time = "2021-06-16T01:26:16+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          The xmonad module now compiles the configuration before
+          linking the binary to the place xmonad expects to find
+          the compiled configuration (the binary).
+
+          This breaks recompilation of xmonad (i.e. the 'q' binding or
+          'xmonad --recompile').
+
+          If this behavior is undesirable, do not use the
+          'xsession.windowManager.xmonad.config' option. Instead, set the
+          contents of the configuration file with
+          'home.file.".xmonad/config.hs".text = "content of the file"'
+          or 'home.file.".xmonad/config.hs".source = ./path-to-config'.
+        '';
+      }
+
+      {
+        time = "2021-06-24T22:36:11+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'i18n.inputMethod'.
+        '';
+      }
+
+      {
+        time = "2021-06-22T14:43:53+00:00";
+        message = ''
+          A new module is available: 'programs.himalaya'.
+        '';
+      }
+
+      {
+        time = "2021-07-11T17:45:56+00:00";
+        message = ''
+          A new module is available: 'programs.sm64ex'.
+        '';
+      }
+
+      {
+        time = "2021-07-15T13:38:32+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.xsettingsd'.
+        '';
+      }
+
+      {
+        time = "2021-07-14T20:06:18+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.volnoti'.
+        '';
+      }
+
+      {
+        time = "2021-07-23T22:22:31+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'services.trayer'.
+        '';
+      }
     ];
   };
 }

modules/misc/nixpkgs.nix

@@ -6,40 +6,31 @@ with lib;
 
 let
 
-  isConfig = x:
-    builtins.isAttrs x || builtins.isFunction x;
+  isConfig = x: builtins.isAttrs x || builtins.isFunction x;
 
-  optCall = f: x:
-    if builtins.isFunction f
-    then f x
-    else f;
+  optCall = f: x: if builtins.isFunction f then f x else f;
 
   mergeConfig = lhs_: rhs_:
     let
       lhs = optCall lhs_ { inherit pkgs; };
       rhs = optCall rhs_ { inherit pkgs; };
-    in
-    lhs // rhs //
-    optionalAttrs (lhs ? packageOverrides) {
+    in lhs // rhs // optionalAttrs (lhs ? packageOverrides) {
       packageOverrides = pkgs:
-        optCall lhs.packageOverrides pkgs //
-        optCall (attrByPath ["packageOverrides"] ({}) rhs) pkgs;
-    } //
-    optionalAttrs (lhs ? perlPackageOverrides) {
+        optCall lhs.packageOverrides pkgs
+        // optCall (attrByPath [ "packageOverrides" ] ({ }) rhs) pkgs;
+    } // optionalAttrs (lhs ? perlPackageOverrides) {
       perlPackageOverrides = pkgs:
-        optCall lhs.perlPackageOverrides pkgs //
-        optCall (attrByPath ["perlPackageOverrides"] ({}) rhs) pkgs;
+        optCall lhs.perlPackageOverrides pkgs
+        // optCall (attrByPath [ "perlPackageOverrides" ] ({ }) rhs) pkgs;
     };
 
   configType = mkOptionType {
     name = "nixpkgs-config";
     description = "nixpkgs config";
     check = x:
-      let traceXIfNot = c:
-            if c x then true
-            else lib.traceSeqN 1 x false;
+      let traceXIfNot = c: if c x then true else lib.traceSeqN 1 x false;
       in traceXIfNot isConfig;
-    merge = args: fold (def: mergeConfig def.value) {};
+    merge = args: fold (def: mergeConfig def.value) { };
   };
 
   overlayType = mkOptionType {
@@ -49,13 +40,9 @@ let
     merge = lib.mergeOneOption;
   };
 
-  _pkgs = import pkgsPath (
-    filterAttrs (n: v: v != null) config.nixpkgs
-  );
+  _pkgs = import pkgsPath (filterAttrs (n: v: v != null) config.nixpkgs);
 
-in
-
-{
+in {
   options.nixpkgs = {
     config = mkOption {
       default = null;
@@ -91,17 +78,16 @@ in
 
     overlays = mkOption {
       default = null;
-      example = literalExample
-        ''
-          [ (self: super: {
-              openssh = super.openssh.override {
-                hpnSupport = true;
-                withKerberos = true;
-                kerberos = self.libkrb5;
-              };
+      example = literalExample ''
+        [ (self: super: {
+            openssh = super.openssh.override {
+              hpnSupport = true;
+              withKerberos = true;
+              kerberos = self.libkrb5;
             };
-          ) ]
-        '';
+          };
+        ) ]
+      '';
       type = types.nullOr (types.listOf overlayType);
       description = ''
         List of overlays to use with the Nix Packages collection. (For
@@ -144,9 +130,10 @@ in
     _module.args = {
       pkgs = mkOverride modules.defaultPriority _pkgs;
       pkgs_i686 =
-        if _pkgs.stdenv.isLinux && _pkgs.stdenv.hostPlatform.isx86
-        then _pkgs.pkgsi686Linux
-        else { };
+        if _pkgs.stdenv.isLinux && _pkgs.stdenv.hostPlatform.isx86 then
+          _pkgs.pkgsi686Linux
+        else
+          { };
     };
   };
 }

modules/misc/numlock.nix

@@ -12,6 +12,10 @@ in {
   options = { xsession.numlock.enable = mkEnableOption "Num Lock"; };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (hm.assertions.assertPlatform "xsession.numlock" pkgs platforms.linux)
+    ];
+
     systemd.user.services.numlockx = {
       Unit = {
         Description = "NumLockX";

modules/misc/tmpfiles.nix

@@ -25,6 +25,11 @@ in {
   };
 
   config = mkIf (cfg.rules != [ ]) {
+    assertions = [
+      (hm.assertions.assertPlatform "systemd.user.tmpfiles" pkgs
+        platforms.linux)
+    ];
+
     xdg = {
       dataFile."user-tmpfiles.d/home-manager.conf" = {
         text = ''

modules/misc/version.nix

@@ -5,8 +5,16 @@ with lib;
 {
   options = {
     home.stateVersion = mkOption {
-      type =
-        types.enum [ "18.09" "19.03" "19.09" "20.03" "20.09" "21.03" "21.05" ];
+      type = types.enum [
+        "18.09"
+        "19.03"
+        "19.09"
+        "20.03"
+        "20.09"
+        "21.03"
+        "21.05"
+        "21.11"
+      ];
       default = "18.09";
       description = ''
         It is occasionally necessary for Home Manager to change

modules/misc/xdg-desktop-entries.nix

@@ -0,0 +1,183 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  desktopEntry = {
+    options = {
+      # Since this module uses the nixpkgs/pkgs/build-support/make-desktopitem function, 
+      # our options and defaults follow its parameters, with the following exceptions:
+
+      # `desktopName` on makeDesktopItem is controlled by `name`.
+      # This is what we'd commonly consider the name of the application.
+      # `name` on makeDesktopItem is controlled by this module's key in the attrset.
+      # This is the file's filename excluding ".desktop".
+
+      # `extraEntries` on makeDesktopItem is controlled by `extraConfig`,
+      # and `extraDesktopEntries` by `settings`,
+      # to match what's commonly used by other home manager modules.
+
+      # `startupNotify` on makeDesktopItem asks for "true" or "false" strings,
+      # for usability's sake we ask for a boolean.
+
+      # `mimeType` and `categories` on makeDesktopItem ask for a string in the format "one;two;three;",
+      # for the same reason we ask for a list of strings.
+
+      # Descriptions are taken from the desktop entry spec: 
+      # https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#recognized-keys
+
+      type = mkOption {
+        description = "The type of the desktop entry.";
+        default = "Application";
+        type = types.enum [ "Application" "Link" "Directory" ];
+      };
+
+      exec = mkOption {
+        description = "Program to execute, possibly with arguments.";
+        type = types.str;
+      };
+
+      icon = mkOption {
+        description = "Icon to display in file manager, menus, etc.";
+        type = types.nullOr types.str;
+        default = null;
+      };
+
+      comment = mkOption {
+        description = "Tooltip for the entry.";
+        type = types.nullOr types.str;
+        default = null;
+      };
+
+      terminal = mkOption {
+        description = "Whether the program runs in a terminal window.";
+        type = types.bool;
+        default = false;
+      };
+
+      name = mkOption {
+        description = "Specific name of the application.";
+        type = types.str;
+      };
+
+      genericName = mkOption {
+        description = "Generic name of the application.";
+        type = types.nullOr types.str;
+        default = null;
+      };
+
+      mimeType = mkOption {
+        description = "The MIME type(s) supported by this application.";
+        type = types.nullOr (types.listOf types.str);
+        default = null;
+      };
+
+      categories = mkOption {
+        description =
+          "Categories in which the entry should be shown in a menu.";
+        type = types.nullOr (types.listOf types.str);
+        default = null;
+      };
+
+      startupNotify = mkOption {
+        description = ''
+          If true, it is KNOWN that the application will send a "remove" 
+          message when started with the <literal>DESKTOP_STARTUP_ID</literal> 
+          environment variable set. If false, it is KNOWN that the application 
+          does not work with startup notification at all.'';
+        type = types.nullOr types.bool;
+        default = null;
+      };
+
+      extraConfig = mkOption {
+        description = ''
+          Extra configuration. Will be appended to the end of the file and 
+          may thus contain extra sections.
+        '';
+        type = types.lines;
+        default = "";
+      };
+
+      settings = mkOption {
+        type = types.attrsOf types.string;
+        description = ''
+          Extra key-value pairs to add to the <literal>[Desktop Entry]</literal> section. 
+          This may override other values.
+        '';
+        default = { };
+        example = literalExample ''
+          {
+            Keywords = "calc;math";
+            DBusActivatable = "false";
+          }
+        '';
+      };
+
+      fileValidation = mkOption {
+        type = types.bool;
+        description = "Whether to validate the generated desktop file.";
+        default = true;
+      };
+    };
+  };
+
+  #formatting helpers
+  ifNotNull = a: a': if a == null then null else a';
+  stringBool = bool: if bool then "true" else "false";
+  semicolonList = list:
+    (concatStringsSep ";" list) + ";"; # requires trailing semicolon
+
+  #passes config options to makeDesktopItem in expected format
+  makeFile = name: config:
+    pkgs.makeDesktopItem {
+      name = name;
+      type = config.type;
+      exec = config.exec;
+      icon = config.icon;
+      comment = config.comment;
+      terminal = config.terminal;
+      desktopName = config.name;
+      genericName = config.genericName;
+      mimeType = ifNotNull config.mimeType (semicolonList config.mimeType);
+      categories =
+        ifNotNull config.categories (semicolonList config.categories);
+      startupNotify =
+        ifNotNull config.startupNotify (stringBool config.startupNotify);
+      extraEntries = config.extraConfig;
+      extraDesktopEntries = config.settings;
+    };
+in {
+  meta.maintainers = with maintainers; [ cwyc ];
+
+  options.xdg.desktopEntries = mkOption {
+    description = ''
+      Desktop Entries allow applications to be shown in your desktop environment's app launcher. </para><para>
+      You can define entries for programs without entries or override existing entries. </para><para>
+      See <link xlink:href="https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#recognized-keys" /> for more information on options.
+    '';
+    default = { };
+    type = types.attrsOf (types.submodule desktopEntry);
+    example = literalExample ''
+      {
+        firefox = {
+          name = "Firefox";
+          genericName = "Web Browser";
+          exec = "firefox %U";
+          terminal = false;
+          categories = [ "Application" "Network" "WebBrowser" ];
+          mimeType = [ "text/html" "text/xml" ];
+        };
+      }
+    '';
+  };
+
+  config = mkIf (config.xdg.desktopEntries != { }) {
+    assertions = [
+      (hm.assertions.assertPlatform "xdg.desktopEntries" pkgs platforms.linux)
+    ];
+
+    home.packages = (map hiPrio # we need hiPrio to override existing entries
+      (attrsets.mapAttrsToList makeFile config.xdg.desktopEntries));
+  };
+
+}

modules/misc/xdg-mime-apps.nix

@@ -73,6 +73,9 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions =
+      [ (hm.assertions.assertPlatform "xdg.mimeApps" pkgs platforms.linux) ];
+
     # Deprecated but still used by some applications.
     xdg.dataFile."applications/mimeapps.list".source =
       config.xdg.configFile."mimeapps.list".source;

modules/misc/xdg-mime.nix

@@ -10,7 +10,9 @@ in {
   options = {
     xdg.mime.enable = mkOption {
       type = types.bool;
-      default = true;
+      default = pkgs.hostPlatform.isLinux;
+      defaultText =
+        literalExample "true if host platform is Linux, false otherwise";
       description = ''
         Whether to install programs and files to support the
         XDG Shared MIME-info specification and XDG MIME Applications
@@ -24,6 +26,9 @@ in {
   };
 
   config = mkIf config.xdg.mime.enable {
+    assertions =
+      [ (hm.assertions.assertPlatform "xdg.mime" pkgs platforms.linux) ];
+
     home.packages = [
       # Explicitly install package to provide basic mime types.
       pkgs.shared-mime-info

modules/misc/xdg-system-dirs.nix

@@ -36,6 +36,12 @@ in {
   };
 
   config = mkMerge [
+    (mkIf (cfg.config != [ ] || cfg.data != [ ]) {
+      assertions = [
+        (hm.assertions.assertPlatform "xdg.systemDirs" pkgs platforms.linux)
+      ];
+    })
+
     (mkIf (cfg.config != [ ]) {
       home.sessionVariables.XDG_CONFIG_DIRS =
         "${configDirs}\${XDG_CONFIG_DIRS:+:$XDG_CONFIG_DIRS}";

modules/misc/xdg-user-dirs.nix

@@ -103,6 +103,9 @@ in {
       XDG_VIDEOS_DIR = cfg.videos;
     } // cfg.extraConfig;
   in mkIf cfg.enable {
+    assertions =
+      [ (hm.assertions.assertPlatform "xdg.userDirs" pkgs platforms.linux) ];
+
     xdg.configFile."user-dirs.dirs".text = let
       # For some reason, these need to be wrapped with quotes to be valid.
       wrapped = mapAttrs (_: value: ''"${value}"'') directories;

modules/misc/xdg.nix

@@ -16,14 +16,10 @@ let
   defaultDataHome = "${config.home.homeDirectory}/.local/share";
 
   getXdgDir = name: fallback:
-    let
-      value = builtins.getEnv name;
-    in
-      if value != "" then value else fallback;
+    let value = builtins.getEnv name;
+    in if value != "" then value else fallback;
 
-in
-
-{
+in {
   options.xdg = {
     enable = mkEnableOption "management of XDG base directories";
 
@@ -37,7 +33,7 @@ in
 
     configFile = mkOption {
       type = fileType "<varname>xdg.configHome</varname>" cfg.configHome;
-      default = {};
+      default = { };
       description = ''
         Attribute set of files to link into the user's XDG
         configuration home.
@@ -54,7 +50,7 @@ in
 
     dataFile = mkOption {
       type = fileType "<varname>xdg.dataHome</varname>" cfg.dataHome;
-      default = {};
+      default = { };
       description = ''
         Attribute set of files to link into the user's XDG
         data home.

modules/modules.nix

@@ -1,239 +1,245 @@
 { pkgs
 
-  # Note, this should be "the standard library" + HM extensions.
+# Note, this should be "the standard library" + HM extensions.
 , lib
 
-  # Whether to enable module type checking.
+# Whether to enable module type checking.
 , check ? true
 
-# If disabled, the pkgs attribute passed to this function is used instead.
-, useNixpkgsModule ? true
-}:
+  # If disabled, the pkgs attribute passed to this function is used instead.
+, useNixpkgsModule ? true }:
 
 with lib;
 
 let
 
-  hostPlatform = pkgs.stdenv.hostPlatform;
-
-  loadModule = file: { condition ? true }: {
-    inherit file condition;
-  };
-
-  allModules = [
-    (loadModule ./accounts/email.nix { })
-    (loadModule ./config/i18n.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./files.nix { })
-    (loadModule ./home-environment.nix { })
-    (loadModule ./manual.nix { })
-    (loadModule ./misc/dconf.nix { })
-    (loadModule ./misc/debug.nix { })
-    (loadModule ./misc/fontconfig.nix { })
-    (loadModule ./misc/gtk.nix { })
-    (loadModule ./misc/lib.nix { })
-    (loadModule ./misc/news.nix { })
-    (loadModule ./misc/nixpkgs.nix { condition = useNixpkgsModule; })
-    (loadModule ./misc/numlock.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/pam.nix { })
-    (loadModule ./misc/qt.nix { })
-    (loadModule ./misc/submodule-support.nix { })
-    (loadModule ./misc/tmpfiles.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/version.nix { })
-    (loadModule ./misc/vte.nix { })
-    (loadModule ./misc/xdg-system-dirs.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/xdg-mime.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/xdg-mime-apps.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/xdg-user-dirs.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./misc/xdg.nix { })
-    (loadModule ./programs/abook.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./programs/afew.nix { })
-    (loadModule ./programs/alacritty.nix { })
-    (loadModule ./programs/alot.nix { })
-    (loadModule ./programs/aria2.nix { })
-    (loadModule ./programs/astroid.nix { })
-    (loadModule ./programs/autojump.nix { })
-    (loadModule ./programs/autorandr.nix { })
-    (loadModule ./programs/bash.nix { })
-    (loadModule ./programs/bat.nix { })
-    (loadModule ./programs/beets.nix { })
-    (loadModule ./programs/broot.nix { })
-    (loadModule ./programs/browserpass.nix { })
-    (loadModule ./programs/chromium.nix { })
-    (loadModule ./programs/command-not-found/command-not-found.nix { })
-    (loadModule ./programs/dircolors.nix { })
-    (loadModule ./programs/direnv.nix { })
-    (loadModule ./programs/eclipse.nix { })
-    (loadModule ./programs/emacs.nix { })
-    (loadModule ./programs/exa.nix { })
-    (loadModule ./programs/feh.nix { })
-    (loadModule ./programs/firefox.nix { })
-    (loadModule ./programs/fish.nix { })
-    (loadModule ./programs/foot.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./programs/fzf.nix { })
-    (loadModule ./programs/getmail.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./programs/gh.nix { })
-    (loadModule ./programs/git.nix { })
-    (loadModule ./programs/gnome-terminal.nix { })
-    (loadModule ./programs/go.nix { })
-    (loadModule ./programs/gpg.nix { })
-    (loadModule ./programs/home-manager.nix { })
-    (loadModule ./programs/htop.nix { })
-    (loadModule ./programs/i3status.nix { })
-    (loadModule ./programs/i3status-rust.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./programs/info.nix { })
-    (loadModule ./programs/irssi.nix { })
-    (loadModule ./programs/lieer.nix { })
-    (loadModule ./programs/jq.nix { })
-    (loadModule ./programs/kakoune.nix { })
-    (loadModule ./programs/keychain.nix { })
-    (loadModule ./programs/kitty.nix { })
-    (loadModule ./programs/lazygit.nix { })
-    (loadModule ./programs/lesspipe.nix { })
-    (loadModule ./programs/lf.nix { })
-    (loadModule ./programs/lsd.nix { })
-    (loadModule ./programs/man.nix { })
-    (loadModule ./programs/matplotlib.nix { })
-    (loadModule ./programs/mbsync.nix { })
-    (loadModule ./programs/mcfly.nix { })
-    (loadModule ./programs/mercurial.nix { })
-    (loadModule ./programs/mpv.nix { })
-    (loadModule ./programs/msmtp.nix { })
-    (loadModule ./programs/mu.nix { })
-    (loadModule ./programs/ncmpcpp.nix { })
-    (loadModule ./programs/ncspot.nix { })
-    (loadModule ./programs/ne.nix { })
-    (loadModule ./programs/neomutt.nix { })
-    (loadModule ./programs/neovim.nix { })
-    (loadModule ./programs/newsboat.nix { })
-    (loadModule ./programs/nix-index.nix { })
-    (loadModule ./programs/noti.nix { })
-    (loadModule ./programs/notmuch.nix { })
-    (loadModule ./programs/nushell.nix { })
-    (loadModule ./programs/obs-studio.nix { })
-    (loadModule ./programs/octant.nix { })
-    (loadModule ./programs/offlineimap.nix { })
-    (loadModule ./programs/opam.nix { })
-    (loadModule ./programs/password-store.nix { })
-    (loadModule ./programs/pazi.nix { })
-    (loadModule ./programs/pet.nix { })
-    (loadModule ./programs/pidgin.nix { })
-    (loadModule ./programs/powerline-go.nix { })
-    (loadModule ./programs/qutebrowser.nix { })
-    (loadModule ./programs/readline.nix { })
-    (loadModule ./programs/rofi.nix { })
-    (loadModule ./programs/rofi-pass.nix {  })
-    (loadModule ./programs/rtorrent.nix { })
-    (loadModule ./programs/scmpuff.nix { })
-    (loadModule ./programs/skim.nix { })
-    (loadModule ./programs/starship.nix { })
-    (loadModule ./programs/sbt.nix { })
-    (loadModule ./programs/ssh.nix { })
-    (loadModule ./programs/taskwarrior.nix { })
-    (loadModule ./programs/termite.nix { })
-    (loadModule ./programs/texlive.nix { })
-    (loadModule ./programs/tmux.nix { })
-    (loadModule ./programs/topgrade.nix { })
-    (loadModule ./programs/urxvt.nix { })
-    (loadModule ./programs/vim.nix { })
-    (loadModule ./programs/vscode.nix { })
-    (loadModule ./programs/vscode/haskell.nix { })
-    (loadModule ./programs/waybar.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./programs/z-lua.nix { })
-    (loadModule ./programs/zathura.nix { })
-    (loadModule ./programs/zoxide.nix { })
-    (loadModule ./programs/zplug.nix { })
-    (loadModule ./programs/zsh.nix { })
-    (loadModule ./programs/zsh/prezto.nix { })
-    (loadModule ./services/barrier.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/blueman-applet.nix { })
-    (loadModule ./services/caffeine.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/cbatticon.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/clipmenu.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/compton.nix { })
-    (loadModule ./services/dropbox.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/dunst.nix { })
-    (loadModule ./services/dwm-status.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/emacs.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/etesync-dav.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/flameshot.nix { })
-    (loadModule ./services/fluidsynth.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/redshift-gammastep/gammastep.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/getmail.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/gnome-keyring.nix { })
-    (loadModule ./services/gpg-agent.nix { })
-    (loadModule ./services/grobi.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/hound.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/imapnotify.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/kanshi.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/kbfs.nix { })
-    (loadModule ./services/kdeconnect.nix { })
-    (loadModule ./services/keepassx.nix { })
-    (loadModule ./services/keybase.nix { })
-    (loadModule ./services/keynav.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/lieer.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/lorri.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/mako.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/mbsync.nix { })
-    (loadModule ./services/mpd.nix { })
-    (loadModule ./services/mpdris2.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/mpris-proxy.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/muchsync.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/network-manager-applet.nix { })
-    (loadModule ./services/nextcloud-client.nix { })
-    (loadModule ./services/owncloud-client.nix { })
-    (loadModule ./services/parcellite.nix { })
-    (loadModule ./services/pass-secret-service.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/password-store-sync.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/pasystray.nix { })
-    (loadModule ./services/pbgopy.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/picom.nix { })
-    (loadModule ./services/plan9port.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/playerctld.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/polybar.nix { })
-    (loadModule ./services/poweralertd.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/pulseeffects.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/random-background.nix { })
-    (loadModule ./services/redshift-gammastep/redshift.nix { })
-    (loadModule ./services/rsibreak.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/screen-locker.nix { })
-    (loadModule ./services/stalonetray.nix { })
-    (loadModule ./services/status-notifier-watcher.nix { })
-    (loadModule ./services/spotifyd.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/sxhkd.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/syncthing.nix { })
-    (loadModule ./services/taffybar.nix { })
-    (loadModule ./services/tahoe-lafs.nix { })
-    (loadModule ./services/taskwarrior-sync.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/udiskie.nix { })
-    (loadModule ./services/unclutter.nix { })
-    (loadModule ./services/unison.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/window-managers/awesome.nix { })
-    (loadModule ./services/window-managers/bspwm/default.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/window-managers/i3-sway/i3.nix { })
-    (loadModule ./services/window-managers/i3-sway/sway.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/window-managers/xmonad.nix { })
-    (loadModule ./services/wlsunset.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/xcape.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/xembed-sni-proxy.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./services/xscreensaver.nix { })
-    (loadModule ./services/xsuspender.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./systemd.nix { })
-    (loadModule ./targets/darwin { condition = hostPlatform.isDarwin; })
-    (loadModule ./targets/generic-linux.nix { condition = hostPlatform.isLinux; })
-    (loadModule ./xcursor.nix { })
-    (loadModule ./xresources.nix { })
-    (loadModule ./xsession.nix { })
-    (loadModule (pkgs.path + "/nixos/modules/misc/assertions.nix") { })
-    (loadModule (pkgs.path + "/nixos/modules/misc/meta.nix") { })
-  ];
-
-  modules = map (getAttr "file") (filter (getAttr "condition") allModules);
+  modules = [
+    ./accounts/email.nix
+    ./config/i18n.nix
+    ./files.nix
+    ./home-environment.nix
+    ./i18n/input-method/default.nix
+    ./manual.nix
+    ./misc/dconf.nix
+    ./misc/debug.nix
+    ./misc/fontconfig.nix
+    ./misc/gtk.nix
+    ./misc/lib.nix
+    ./misc/news.nix
+    ./misc/numlock.nix
+    ./misc/pam.nix
+    ./misc/qt.nix
+    ./misc/submodule-support.nix
+    ./misc/tmpfiles.nix
+    ./misc/version.nix
+    ./misc/vte.nix
+    ./misc/xdg-desktop-entries.nix
+    ./misc/xdg-mime-apps.nix
+    ./misc/xdg-mime.nix
+    ./misc/xdg-system-dirs.nix
+    ./misc/xdg-user-dirs.nix
+    ./misc/xdg.nix
+    ./programs/abook.nix
+    ./programs/afew.nix
+    ./programs/alacritty.nix
+    ./programs/alot.nix
+    ./programs/aria2.nix
+    ./programs/astroid.nix
+    ./programs/autojump.nix
+    ./programs/autorandr.nix
+    ./programs/bash.nix
+    ./programs/bat.nix
+    ./programs/beets.nix
+    ./programs/broot.nix
+    ./programs/browserpass.nix
+    ./programs/chromium.nix
+    ./programs/command-not-found/command-not-found.nix
+    ./programs/dircolors.nix
+    ./programs/direnv.nix
+    ./programs/eclipse.nix
+    ./programs/emacs.nix
+    ./programs/exa.nix
+    ./programs/feh.nix
+    ./programs/firefox.nix
+    ./programs/fish.nix
+    ./programs/foot.nix
+    ./programs/fzf.nix
+    ./programs/getmail.nix
+    ./programs/gh.nix
+    ./programs/git.nix
+    ./programs/gnome-terminal.nix
+    ./programs/go.nix
+    ./programs/gpg.nix
+    ./programs/himalaya.nix
+    ./programs/home-manager.nix
+    ./programs/htop.nix
+    ./programs/i3status-rust.nix
+    ./programs/i3status.nix
+    ./programs/info.nix
+    ./programs/irssi.nix
+    ./programs/jq.nix
+    ./programs/kakoune.nix
+    ./programs/keychain.nix
+    ./programs/kitty.nix
+    ./programs/lazygit.nix
+    ./programs/lesspipe.nix
+    ./programs/lf.nix
+    ./programs/lieer.nix
+    ./programs/lsd.nix
+    ./programs/man.nix
+    ./programs/mangohud.nix
+    ./programs/matplotlib.nix
+    ./programs/mbsync.nix
+    ./programs/mcfly.nix
+    ./programs/mercurial.nix
+    ./programs/mpv.nix
+    ./programs/msmtp.nix
+    ./programs/mu.nix
+    ./programs/ncmpcpp.nix
+    ./programs/ncspot.nix
+    ./programs/ne.nix
+    ./programs/neomutt.nix
+    ./programs/neovim.nix
+    ./programs/newsboat.nix
+    ./programs/nix-index.nix
+    ./programs/noti.nix
+    ./programs/notmuch.nix
+    ./programs/nushell.nix
+    ./programs/obs-studio.nix
+    ./programs/octant.nix
+    ./programs/offlineimap.nix
+    ./programs/opam.nix
+    ./programs/password-store.nix
+    ./programs/pazi.nix
+    ./programs/pet.nix
+    ./programs/pidgin.nix
+    ./programs/piston-cli.nix
+    ./programs/powerline-go.nix
+    ./programs/qutebrowser.nix
+    ./programs/rbw.nix
+    ./programs/readline.nix
+    ./programs/rofi-pass.nix
+    ./programs/rofi.nix
+    ./programs/rtorrent.nix
+    ./programs/sbt.nix
+    ./programs/scmpuff.nix
+    ./programs/senpai.nix
+    ./programs/skim.nix
+    ./programs/sm64ex.nix
+    ./programs/ssh.nix
+    ./programs/starship.nix
+    ./programs/taskwarrior.nix
+    ./programs/terminator.nix
+    ./programs/termite.nix
+    ./programs/texlive.nix
+    ./programs/tmux.nix
+    ./programs/topgrade.nix
+    ./programs/urxvt.nix
+    ./programs/vim.nix
+    ./programs/vscode.nix
+    ./programs/vscode/haskell.nix
+    ./programs/waybar.nix
+    ./programs/xmobar.nix
+    ./programs/z-lua.nix
+    ./programs/zathura.nix
+    ./programs/zoxide.nix
+    ./programs/zplug.nix
+    ./programs/zsh.nix
+    ./programs/zsh/prezto.nix
+    ./services/barrier.nix
+    ./services/blueman-applet.nix
+    ./services/caffeine.nix
+    ./services/cbatticon.nix
+    ./services/clipmenu.nix
+    ./services/compton.nix
+    ./services/devilspie2.nix
+    ./services/dropbox.nix
+    ./services/dunst.nix
+    ./services/dwm-status.nix
+    ./services/emacs.nix
+    ./services/etesync-dav.nix
+    ./services/flameshot.nix
+    ./services/fluidsynth.nix
+    ./services/getmail.nix
+    ./services/gnome-keyring.nix
+    ./services/gpg-agent.nix
+    ./services/grobi.nix
+    ./services/hound.nix
+    ./services/imapnotify.nix
+    ./services/kanshi.nix
+    ./services/kbfs.nix
+    ./services/kdeconnect.nix
+    ./services/keepassx.nix
+    ./services/keybase.nix
+    ./services/keynav.nix
+    ./services/lieer.nix
+    ./services/lorri.nix
+    ./services/mako.nix
+    ./services/mbsync.nix
+    ./services/mpd.nix
+    ./services/mpdris2.nix
+    ./services/mpris-proxy.nix
+    ./services/muchsync.nix
+    ./services/network-manager-applet.nix
+    ./services/nextcloud-client.nix
+    ./services/owncloud-client.nix
+    ./services/pantalaimon.nix
+    ./services/parcellite.nix
+    ./services/pass-secret-service.nix
+    ./services/password-store-sync.nix
+    ./services/pasystray.nix
+    ./services/pbgopy.nix
+    ./services/picom.nix
+    ./services/plan9port.nix
+    ./services/playerctld.nix
+    ./services/polybar.nix
+    ./services/poweralertd.nix
+    ./services/pulseeffects.nix
+    ./services/random-background.nix
+    ./services/redshift-gammastep/gammastep.nix
+    ./services/redshift-gammastep/redshift.nix
+    ./services/rsibreak.nix
+    ./services/screen-locker.nix
+    ./services/spotifyd.nix
+    ./services/stalonetray.nix
+    ./services/status-notifier-watcher.nix
+    ./services/sxhkd.nix
+    ./services/syncthing.nix
+    ./services/taffybar.nix
+    ./services/trayer.nix
+    ./services/tahoe-lafs.nix
+    ./services/taskwarrior-sync.nix
+    ./services/udiskie.nix
+    ./services/unclutter.nix
+    ./services/unison.nix
+    ./services/volnoti.nix
+    ./services/window-managers/awesome.nix
+    ./services/window-managers/bspwm/default.nix
+    ./services/window-managers/i3-sway/i3.nix
+    ./services/window-managers/i3-sway/sway.nix
+    ./services/window-managers/xmonad.nix
+    ./services/wlsunset.nix
+    ./services/xcape.nix
+    ./services/xembed-sni-proxy.nix
+    ./services/xidlehook.nix
+    ./services/xscreensaver.nix
+    ./services/xsettingsd.nix
+    ./services/xsuspender.nix
+    ./systemd.nix
+    ./targets/darwin
+    ./targets/generic-linux.nix
+    ./xcursor.nix
+    ./xresources.nix
+    ./xsession.nix
+    (pkgs.path + "/nixos/modules/misc/assertions.nix")
+    (pkgs.path + "/nixos/modules/misc/meta.nix")
+  ] ++ optional useNixpkgsModule ./misc/nixpkgs.nix;
 
   pkgsModule = { config, ... }: {
     config = {
       _module.args.baseModules = modules;
-      _module.args.pkgsPath = lib.mkDefault (
-        if versionAtLeast config.home.stateVersion "20.09" then
+      _module.args.pkgsPath = lib.mkDefault
+        (if versionAtLeast config.home.stateVersion "20.09" then
           pkgs.path
         else
           <nixpkgs>);
@@ -245,6 +251,4 @@ let
     };
   };
 
-in
-
-  modules ++ [ pkgsModule ]
+in modules ++ [ pkgsModule ]

modules/programs/abook.nix

@@ -27,7 +27,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions =
+      [ (hm.assertions.assertPlatform "programs.abook" pkgs platforms.linux) ];
+
     home.packages = [ pkgs.abook ];
+
     xdg.configFile."abook/abookrc" = mkIf (cfg.extraConfig != "") {
       text = ''
         # Generated by Home Manager.

modules/programs/chromium.nix

@@ -114,10 +114,12 @@ let
         brave = "BraveSoftware/Brave-Browser";
       };
 
+      linuxDirs = { brave = "BraveSoftware/Brave-Browser"; };
+
       configDir = if pkgs.stdenv.isDarwin then
-        "Library/Application Support/${getAttr browser darwinDirs}"
+        "Library/Application Support/" + (darwinDirs."${browser}" or browser)
       else
-        "${config.xdg.configHome}/${browser}";
+        "${config.xdg.configHome}/" + (linuxDirs."${browser}" or browser);
 
       extensionJson = ext:
         assert ext.crxPath != null -> ext.version != null;

modules/programs/command-not-found/command-not-found.nix

@@ -11,13 +11,8 @@ let
     dir = "bin";
     src = ./command-not-found.pl;
     isExecutable = true;
-    inherit (pkgs) perl;
     inherit (cfg) dbPath;
-    perlFlags = concatStrings (map (path: "-I ${path}/lib/perl5/site_perl ") [
-      pkgs.perlPackages.DBI
-      pkgs.perlPackages.DBDSQLite
-      pkgs.perlPackages.StringShellQuote
-    ]);
+    perl = pkgs.perl.withPackages (p: [ p.DBDSQLite p.StringShellQuote ]);
   };
 
   shInit = commandNotFoundHandlerName: ''

modules/programs/command-not-found/command-not-found.pl

@@ -1,4 +1,4 @@
-#! @perl@/bin/perl -w @perlFlags@
+#! @perl@/bin/perl -w
 
 use strict;
 use DBI;
@@ -29,16 +29,17 @@ if (!defined $res || scalar @$res == 0) {
         exec("nix-shell", "-p", $package, "--run", shell_quote("exec", @ARGV));
     } else {
         print STDERR <<EOF;
-The program ‘$program’ is currently not installed. You can install it by typing:
-  nix-env -iA nixos.$package
+The program '$program' is not in your PATH. You can make it available in an
+ephemeral shell by typing:
+  nix-shell -p $package
 EOF
     }
 } else {
     print STDERR <<EOF;
-The program ‘$program’ is currently not installed. It is provided by
-several packages. You can install it by typing one of the following:
+The program '$program' is not in your PATH. It is provided by several packages.
+You can make it available in an ephemeral shell by typing one of the following:
 EOF
-    print STDERR "  nix-env -iA nixos.$_->{package}\n" foreach @$res;
+    print STDERR "  nix-shell -p $_->{package}\n" foreach @$res;
 }
 
 exit 127;

modules/programs/direnv.nix

@@ -9,6 +9,14 @@ let
   tomlFormat = pkgs.formats.toml { };
 
 in {
+  imports = [
+    (mkRenamedOptionModule [
+      "programs"
+      "direnv"
+      "enableNixDirenvIntegration"
+    ] [ "programs" "direnv" "nix-direnv" "enable" ])
+  ];
+
   meta.maintainers = [ maintainers.rycee ];
 
   options.programs.direnv = {
@@ -63,10 +71,14 @@ in {
       '';
     };
 
-    enableNixDirenvIntegration = mkEnableOption ''
-      <link
-          xlink:href="https://github.com/nix-community/nix-direnv">nix-direnv</link>,
-          a fast, persistent use_nix implementation for direnv'';
+    nix-direnv = {
+      enable = mkEnableOption ''
+        <link
+            xlink:href="https://github.com/nix-community/nix-direnv">nix-direnv</link>,
+            a fast, persistent use_nix implementation for direnv'';
+      enableFlakes = mkEnableOption "Flake support in nix-direnv";
+    };
+
   };
 
   config = mkIf cfg.enable {
@@ -77,9 +89,11 @@ in {
     };
 
     xdg.configFile."direnv/direnvrc" = let
+      package =
+        pkgs.nix-direnv.override { inherit (cfg.nix-direnv) enableFlakes; };
       text = concatStringsSep "\n" (optional (cfg.stdlib != "") cfg.stdlib
-        ++ optional cfg.enableNixDirenvIntegration
-        "source ${pkgs.nix-direnv}/share/nix-direnv/direnvrc");
+        ++ optional cfg.nix-direnv.enable
+        "source ${package}/share/nix-direnv/direnvrc");
     in mkIf (text != "") { inherit text; };
 
     programs.bash.initExtra = mkIf cfg.enableBashIntegration (

modules/programs/firefox.nix

@@ -9,19 +9,15 @@ let
   cfg = config.programs.firefox;
 
   mozillaConfigPath =
-    if isDarwin
-    then "Library/Application Support/Mozilla"
-    else ".mozilla";
+    if isDarwin then "Library/Application Support/Mozilla" else ".mozilla";
 
-  firefoxConfigPath =
-    if isDarwin
-    then "Library/Application Support/Firefox"
-    else "${mozillaConfigPath}/firefox";
+  firefoxConfigPath = if isDarwin then
+    "Library/Application Support/Firefox"
+  else
+    "${mozillaConfigPath}/firefox";
 
   profilesPath =
-    if isDarwin
-    then "${firefoxConfigPath}/Profiles"
-    else firefoxConfigPath;
+    if isDarwin then "${firefoxConfigPath}/Profiles" else firefoxConfigPath;
 
   # The extensions path shared by all profiles; will not be supported
   # by future Firefox versions.
@@ -32,24 +28,17 @@ let
     paths = cfg.extensions;
   };
 
-  profiles =
-    flip mapAttrs' cfg.profiles (_: profile:
-      nameValuePair "Profile${toString profile.id}" {
-        Name = profile.name;
-        Path =
-          if isDarwin
-          then "Profiles/${profile.path}"
-          else profile.path;
-        IsRelative = 1;
-        Default = if profile.isDefault then 1 else 0;
-      }
-    ) // {
-      General = {
-        StartWithLastProfile = 1;
-      };
+  profiles = flip mapAttrs' cfg.profiles (_: profile:
+    nameValuePair "Profile${toString profile.id}" {
+      Name = profile.name;
+      Path = if isDarwin then "Profiles/${profile.path}" else profile.path;
+      IsRelative = 1;
+      Default = if profile.isDefault then 1 else 0;
+    }) // {
+      General = { StartWithLastProfile = 1; };
     };
 
-  profilesIni = generators.toINI {} profiles;
+  profilesIni = generators.toINI { } profiles;
 
   mkUserJs = prefs: extraPrefs: ''
     // Generated by Home Manager.
@@ -61,17 +50,15 @@ let
     ${extraPrefs}
   '';
 
-in
-
-{
+in {
   meta.maintainers = [ maintainers.rycee ];
 
   imports = [
-    (mkRemovedOptionModule ["programs" "firefox" "enableAdobeFlash"]
+    (mkRemovedOptionModule [ "programs" "firefox" "enableAdobeFlash" ]
       "Support for this option has been removed.")
-    (mkRemovedOptionModule ["programs" "firefox" "enableGoogleTalk"]
+    (mkRemovedOptionModule [ "programs" "firefox" "enableGoogleTalk" ]
       "Support for this option has been removed.")
-    (mkRemovedOptionModule ["programs" "firefox" "enableIcedTea"]
+    (mkRemovedOptionModule [ "programs" "firefox" "enableIcedTea" ]
       "Support for this option has been removed.")
   ];
 
@@ -81,10 +68,10 @@ in
 
       package = mkOption {
         type = types.package;
-        default =
-          if versionAtLeast config.home.stateVersion "19.09"
-          then pkgs.firefox
-          else pkgs.firefox-unwrapped;
+        default = if versionAtLeast config.home.stateVersion "19.09" then
+          pkgs.firefox
+        else
+          pkgs.firefox-unwrapped;
         defaultText = literalExample "pkgs.firefox";
         example = literalExample ''
           pkgs.firefox.override {
@@ -106,7 +93,7 @@ in
 
       extensions = mkOption {
         type = types.listOf types.package;
-        default = [];
+        default = [ ];
         example = literalExample ''
           with pkgs.nur.repos.rycee.firefox-addons; [
             https-everywhere
@@ -141,7 +128,7 @@ in
       };
 
       profiles = mkOption {
-        type = types.attrsOf (types.submodule ({config, name, ...}: {
+        type = types.attrsOf (types.submodule ({ config, name, ... }: {
           options = {
             name = mkOption {
               type = types.str;
@@ -159,7 +146,7 @@ in
 
             settings = mkOption {
               type = with types; attrsOf (either bool (either int str));
-              default = {};
+              default = { };
               example = literalExample ''
                 {
                   "browser.startup.homepage" = "https://nixos.org";
@@ -224,7 +211,7 @@ in
             };
           };
         }));
-        default = {};
+        default = { };
         description = "Attribute set of Firefox profiles.";
       };
 
@@ -243,36 +230,27 @@ in
 
   config = mkIf cfg.enable {
     assertions = [
-      (
-        let
-          defaults =
-            catAttrs "name" (filter (a: a.isDefault) (attrValues cfg.profiles));
-        in {
-          assertion = cfg.profiles == {} || length defaults == 1;
-          message =
-            "Must have exactly one default Firefox profile but found "
-            + toString (length defaults)
-            + optionalString (length defaults > 1)
-                (", namely " + concatStringsSep ", " defaults);
-        }
-      )
+      (let
+        defaults =
+          catAttrs "name" (filter (a: a.isDefault) (attrValues cfg.profiles));
+      in {
+        assertion = cfg.profiles == { } || length defaults == 1;
+        message = "Must have exactly one default Firefox profile but found "
+          + toString (length defaults) + optionalString (length defaults > 1)
+          (", namely " + concatStringsSep ", " defaults);
+      })
 
-      (
-        let
-          duplicates =
-            filterAttrs (_: v: length v != 1)
-            (zipAttrs
-            (mapAttrsToList (n: v: { "${toString v.id}" = n; })
-            (cfg.profiles)));
+      (let
+        duplicates = filterAttrs (_: v: length v != 1) (zipAttrs
+          (mapAttrsToList (n: v: { "${toString v.id}" = n; }) (cfg.profiles)));
 
-          mkMsg = n: v: "  - ID ${n} is used by ${concatStringsSep ", " v}";
-        in {
-          assertion = duplicates == {};
-          message =
-            "Must not have Firefox profiles with duplicate IDs but\n"
-            + concatStringsSep "\n" (mapAttrsToList mkMsg duplicates);
-        }
-      )
+        mkMsg = n: v: "  - ID ${n} is used by ${concatStringsSep ", " v}";
+      in {
+        assertion = duplicates == { };
+        message = ''
+          Must not have Firefox profiles with duplicate IDs but
+        '' + concatStringsSep "\n" (mapAttrsToList mkMsg duplicates);
+      })
     ];
 
     warnings = optional (cfg.enableGnomeExtensions or false) ''
@@ -282,65 +260,53 @@ in
       its example for how to do this.
     '';
 
-    home.packages =
-      let
-        # The configuration expected by the Firefox wrapper.
-        fcfg = {
-          enableGnomeExtensions = cfg.enableGnomeExtensions;
+    home.packages = let
+      # The configuration expected by the Firefox wrapper.
+      fcfg = { enableGnomeExtensions = cfg.enableGnomeExtensions; };
+
+      # A bit of hackery to force a config into the wrapper.
+      browserName = cfg.package.browserName or (builtins.parseDrvName
+        cfg.package.name).name;
+
+      # The configuration expected by the Firefox wrapper builder.
+      bcfg = setAttrByPath [ browserName ] fcfg;
+
+      package = if isDarwin then
+        cfg.package
+      else if versionAtLeast config.home.stateVersion "19.09" then
+        cfg.package.override (old: { cfg = old.cfg or { } // fcfg; })
+      else
+        (pkgs.wrapFirefox.override { config = bcfg; }) cfg.package { };
+    in [ package ];
+
+    home.file = mkMerge ([{
+      "${mozillaConfigPath}/${extensionPath}" = mkIf (cfg.extensions != [ ]) {
+        source = "${extensionsEnvPkg}/share/mozilla/${extensionPath}";
+        recursive = true;
+      };
+
+      "${firefoxConfigPath}/profiles.ini" =
+        mkIf (cfg.profiles != { }) { text = profilesIni; };
+    }] ++ flip mapAttrsToList cfg.profiles (_: profile: {
+      "${profilesPath}/${profile.path}/.keep".text = "";
+
+      "${profilesPath}/${profile.path}/chrome/userChrome.css" =
+        mkIf (profile.userChrome != "") { text = profile.userChrome; };
+
+      "${profilesPath}/${profile.path}/chrome/userContent.css" =
+        mkIf (profile.userContent != "") { text = profile.userContent; };
+
+      "${profilesPath}/${profile.path}/user.js" =
+        mkIf (profile.settings != { } || profile.extraConfig != "") {
+          text = mkUserJs profile.settings profile.extraConfig;
         };
 
-        # A bit of hackery to force a config into the wrapper.
-        browserName = cfg.package.browserName
-          or (builtins.parseDrvName cfg.package.name).name;
-
-        # The configuration expected by the Firefox wrapper builder.
-        bcfg = setAttrByPath [browserName] fcfg;
-
-        package =
-          if isDarwin then
-            cfg.package
-          else if versionAtLeast config.home.stateVersion "19.09" then
-            cfg.package.override (old: { cfg = old.cfg or {} // fcfg; })
-          else
-            (pkgs.wrapFirefox.override { config = bcfg; }) cfg.package { };
-      in
-        [ package ];
-
-    home.file = mkMerge (
-      [{
-        "${mozillaConfigPath}/${extensionPath}" = mkIf (cfg.extensions != []) {
-          source = "${extensionsEnvPkg}/share/mozilla/${extensionPath}";
-          recursive = true;
-        };
-
-        "${firefoxConfigPath}/profiles.ini" = mkIf (cfg.profiles != {}) {
-          text = profilesIni;
-        };
-      }]
-      ++ flip mapAttrsToList cfg.profiles (_: profile: {
-        "${profilesPath}/${profile.path}/.keep".text = "";
-
-        "${profilesPath}/${profile.path}/chrome/userChrome.css" =
-          mkIf (profile.userChrome != "") {
-            text = profile.userChrome;
-          };
-
-        "${profilesPath}/${profile.path}/chrome/userContent.css" =
-          mkIf (profile.userContent != "") {
-            text = profile.userContent;
-          };
-
-        "${profilesPath}/${profile.path}/user.js" =
-          mkIf (profile.settings != {} || profile.extraConfig != "") {
-            text = mkUserJs profile.settings profile.extraConfig;
-          };
-
-        "${profilesPath}/${profile.path}/extensions" = mkIf (cfg.extensions != []) {
+      "${profilesPath}/${profile.path}/extensions" =
+        mkIf (cfg.extensions != [ ]) {
           source = "${extensionsEnvPkg}/share/mozilla/${extensionPath}";
           recursive = true;
           force = true;
         };
-      })
-    );
+    }));
   };
 }

modules/programs/foot.nix

@@ -49,6 +49,9 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions =
+      [ (hm.assertions.assertPlatform "programs.foot" pkgs platforms.linux) ];
+
     home.packages = [ cfg.package ];
 
     xdg.configFile."foot/foot.ini" = mkIf (cfg.settings != { }) {

modules/programs/fzf.nix

@@ -148,20 +148,20 @@ in {
 
     programs.bash.initExtra = mkIf cfg.enableBashIntegration ''
       if [[ :$SHELLOPTS: =~ :(vi|emacs): ]]; then
-        . ${pkgs.fzf}/share/fzf/completion.bash
-        . ${pkgs.fzf}/share/fzf/key-bindings.bash
+        . ${cfg.package}/share/fzf/completion.bash
+        . ${cfg.package}/share/fzf/key-bindings.bash
       fi
     '';
 
     programs.zsh.initExtra = mkIf cfg.enableZshIntegration ''
       if [[ $options[zle] = on ]]; then
-        . ${pkgs.fzf}/share/fzf/completion.zsh
-        . ${pkgs.fzf}/share/fzf/key-bindings.zsh
+        . ${cfg.package}/share/fzf/completion.zsh
+        . ${cfg.package}/share/fzf/key-bindings.zsh
       fi
     '';
 
     programs.fish.shellInit = mkIf cfg.enableFishIntegration ''
-      source ${pkgs.fzf}/share/fzf/key-bindings.fish && fzf_key_bindings
+      source ${cfg.package}/share/fzf/key-bindings.fish && fzf_key_bindings
     '';
   };
 }

modules/programs/getmail.nix

@@ -55,6 +55,10 @@ in {
   };
 
   config = mkIf getmailEnabled {
+    assertions = [
+      (hm.assertions.assertPlatform "programs.getmail" pkgs platforms.linux)
+    ];
+
     home.file = foldl' (a: b: a // b) { }
       (map (a: { "${renderConfigFilepath a}".text = renderAccountConfig a; })
         accounts);

modules/programs/gnome-terminal.nix

@@ -187,6 +187,12 @@ let
         '';
       };
 
+      boldIsBright = mkOption {
+        default = null;
+        type = types.nullOr types.bool;
+        description = "Whether bold text is shown in bright colors.";
+      };
+
       deleteBinding = mkOption {
         default = "delete-sequence";
         type = eraseBinding;
@@ -234,6 +240,12 @@ let
         type = types.bool;
         description = "Turn on/off the terminal's bell.";
       };
+
+      transparencyPercent = mkOption {
+        default = null;
+        type = types.nullOr (types.ints.between 0 100);
+        description = "Background transparency in percent.";
+      };
     };
   });
 
@@ -241,6 +253,7 @@ let
     {
       audible-bell = pcfg.audibleBell;
       visible-name = pcfg.visibleName;
+      scroll-on-output = pcfg.scrollOnOutput;
       scrollbar-policy = if pcfg.showScrollbar then "always" else "never";
       scrollback-lines = pcfg.scrollbackLines;
       cursor-shape = pcfg.cursorShape;
@@ -273,7 +286,9 @@ let
       } else {
         bold-color-same-as-fg = false;
         bold-color = pcfg.colors.boldColor;
-      }) // (if (pcfg.colors.cursor != null) then {
+      }) // optionalAttrs (pcfg.boldIsBright != null) {
+        bold-is-bright = pcfg.boldIsBright;
+      } // (if (pcfg.colors.cursor != null) then {
         cursor-colors-set = true;
         cursor-foreground-color = pcfg.colors.cursor.foreground;
         cursor-background-color = pcfg.colors.cursor.background;
@@ -285,10 +300,14 @@ let
         highlight-background-color = pcfg.colors.highlight.background;
       } else {
         highlight-colors-set = false;
-      })));
+      }) // optionalAttrs (pcfg.transparencyPercent != null) {
+        background-transparency-percent = pcfg.transparencyPercent;
+        use-theme-transparency = false;
+        use-transparent-background = true;
+      }));
 
 in {
-  meta.maintainers = [ maintainers.rycee ];
+  meta.maintainers = with maintainers; [ kamadorueda rycee ];
 
   options = {
     programs.gnome-terminal = {
@@ -315,7 +334,7 @@ in {
   };
 
   config = mkIf cfg.enable {
-    home.packages = [ pkgs.gnome3.gnome-terminal ];
+    home.packages = [ pkgs.gnome.gnome-terminal ];
 
     dconf.settings = let dconfPath = "org/gnome/terminal/legacy";
     in {

modules/programs/himalaya.nix

@@ -0,0 +1,100 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.programs.himalaya;
+
+  enabledAccounts =
+    lib.filterAttrs (_: a: a.himalaya.enable) (config.accounts.email.accounts);
+
+  tomlFormat = pkgs.formats.toml { };
+
+  himalayaConfig = let
+    toHimalayaConfig = account:
+      {
+        email = account.address;
+        name = account.realName;
+        default = account.primary;
+
+        # FIXME: does not support disabling TLS altogether
+        # NOTE: does not accept sequence of strings for password commands
+        imap-login = account.userName;
+        imap-passwd-cmd = lib.escapeShellArgs account.passwordCommand;
+        imap-host = account.imap.host;
+        imap-port = account.imap.port;
+        imap-starttls = account.imap.tls.useStartTls;
+
+        smtp-login = account.userName;
+        smtp-passwd-cmd = lib.escapeShellArgs account.passwordCommand;
+        smtp-host = account.smtp.host;
+        smtp-port = account.smtp.port;
+        smtp-starttls = account.imap.tls.useStartTls;
+      } // (lib.optionalAttrs (account.signature.showSignature == "append") {
+        # FIXME: signature cannot be attached
+        signature = account.signature.text;
+      }) // account.himalaya.settings;
+  in {
+    # NOTE: will not start without this configured, but each account overrides it
+    name = "";
+  } // cfg.settings // (lib.mapAttrs (_: toHimalayaConfig) enabledAccounts);
+in {
+  meta.maintainers = with lib.hm.maintainers; [ ambroisie ];
+
+  options = with lib; {
+    programs.himalaya = {
+      enable = mkEnableOption "himalaya mail client";
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.himalaya;
+        defaultText = literalExample "pkgs.himalaya";
+        description = ''
+          Package providing the <command>himalaya</command> mail client.
+        '';
+      };
+
+      settings = mkOption {
+        type = tomlFormat.type;
+        default = { };
+        example = lib.literalExample ''
+          {
+            default-page-size = 50;
+          }
+        '';
+        description = ''
+          Global <command>himalaya</command> configuration values.
+        '';
+      };
+    };
+
+    accounts.email.accounts = mkOption {
+      type = with types;
+        attrsOf (submodule {
+          options.himalaya = {
+            enable = mkEnableOption ''
+              the himalaya mail client for this account
+            '';
+
+            settings = mkOption {
+              type = tomlFormat.type;
+              default = { };
+              example = lib.literalExample ''
+                {
+                  default-page-size = 50;
+                }
+              '';
+              description = ''
+                Extra settings to add to this <command>himalaya</command>
+                account configuration.
+              '';
+            };
+          };
+        });
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+
+    xdg.configFile."himalaya/config.toml".source =
+      tomlFormat.generate "himalaya-config.toml" himalayaConfig;
+  };
+}

modules/programs/htop.nix

@@ -10,10 +10,14 @@ let
     let v' = if isBool v then (if v then "1" else "0") else toString v;
     in "${n}=${v'}";
 
-  formatMeters = side: meters: {
-    "${side}_meters" = mapAttrsToList (x: _: x) meters;
-    "${side}_meter_modes" = mapAttrsToList (_: y: y) meters;
-  };
+  formatMeters = side: meters:
+    let
+      warn' = warn "htop: meters should be passed as a list";
+      meters' = if isList meters then meters else warn' [ meters ];
+    in {
+      "${side}_meters" = concatMap (mapAttrsToList (x: _: x)) meters';
+      "${side}_meter_modes" = concatMap (mapAttrsToList (_: y: y)) meters';
+    };
   leftMeters = formatMeters "left";
   rightMeters = formatMeters "right";
 
@@ -80,6 +84,14 @@ let
     LED = 4;
   };
 
+  # Utilities for constructing meters
+  meter = mode: name: { ${name} = mode; };
+  bar = meter modes.Bar;
+  text = meter modes.Text;
+  graph = meter modes.Graph;
+  led = meter modes.LED;
+  blank = text "Blank";
+
   # Mapping from names to defaults
   meters = {
     Clock = 2;
@@ -231,15 +243,17 @@ in {
         tree_view = false;
         update_process_names = false;
         vim_mode = false;
-      } // (leftMeters {
-        AllCPUs = modes.Bar;
-        Memory = modes.Bar;
-        Swap = modes.Bar;
-      }) // (rightMeters {
-        Tasks = modes.Text;
-        LoadAverage = modes.Text;
-        Uptime = modes.Text;
-      });
+      } // (leftMeters [
+        (bar "AllCPUs2")
+        (bar "Memory")
+        (bar "Swap")
+        (text "Zram")
+      ]) // (rightMeters [
+        (text "Tasks")
+        (text "LoadAverage")
+        (text "Uptime")
+        (text "Systemd")
+      ]);
       example = literalExample ''
         {
           color_scheme = 6;
@@ -262,17 +276,17 @@ in {
           highlight_base_name = 1;
           highlight_megabytes = 1;
           highlight_threads = 1;
-        } // (with config.lib.htop; leftMeters {
-          AllCPUs2 = modes.Bar;
-          Memory = modes.Bar;
-          Swap = modes.Bar;
-          Zram = modes.Text;
-        }) // (with config.lib.htop; rightMeters {
-          Tasks = modes.Text;
-          LoadAverage = modes.Text;
-          Uptime = modes.Text;
-          Systemd = modes.Text;
-        })
+        } // (with config.lib.htop; leftMeters [
+          (bar "AllCPUs2")
+          (bar "Memory")
+          (bar "Swap")
+          (text "Zram")
+        ]) // (with config.lib.htop; rightMeters [
+          (text "Tasks")
+          (text "LoadAverage")
+          (text "Uptime")
+          (text "Systemd")
+        ]);
       '';
       description = ''
         Configuration options to add to
@@ -576,7 +590,9 @@ in {
   };
 
   config = mkIf cfg.enable {
-    lib.htop = { inherit fields modes leftMeters rightMeters; };
+    lib.htop = {
+      inherit fields modes leftMeters rightMeters bar text graph led blank;
+    };
 
     home.packages = [ pkgs.htop ];
 

modules/programs/i3status-rust.nix

@@ -42,8 +42,8 @@ in {
               {
                 block = "memory";
                 display_type = "memory";
-                format_mem = "{Mup}%";
-                format_swap = "{SUp}%";
+                format_mem = "{mem_used_percents}";
+                format_swap = "{swap_used_percents}";
               }
               {
                 block = "cpu";
@@ -205,8 +205,8 @@ in {
              {
                block = "memory";
                display_type = "memory";
-               format_mem = "{Mup}%";
-               format_swap = "{SUp}%";
+               format_mem = "{mem_used_percents}";
+               format_swap = "{swap_used_percents}";
              }
              {
                block = "cpu";
@@ -249,6 +249,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (hm.assertions.assertPlatform "programs.i3status-rust" pkgs
+        platforms.linux)
+    ];
+
     home.packages = [ cfg.package ];
 
     xdg.configFile = mapAttrs' (cfgFileSuffix: cfg:

modules/programs/irssi.nix

@@ -35,6 +35,9 @@ let
           use_ssl = "${boolStr v.server.ssl.enable}";
           ssl_verify = "${boolStr v.server.ssl.verify}";
           autoconnect = "${boolStr v.server.autoConnect}";
+          ${lib.optionalString (v.server.ssl.certificateFile != null) ''
+          ssl_cert = "${v.server.ssl.certificateFile}";
+          ''}
         }
       ''));
 
@@ -118,6 +121,15 @@ let
             default = true;
             description = "Whether the SSL certificate should be verified.";
           };
+
+          certificateFile = mkOption {
+            type = types.nullOr types.path;
+            default = null;
+            description = ''
+              Path to a file containing the certificate used for
+              client authentication to the server.
+            '';
+          };
         };
 
         autoConnect = mkOption {

modules/programs/jq.nix

@@ -30,6 +30,13 @@ in {
     programs.jq = {
       enable = mkEnableOption "the jq command-line JSON processor";
 
+      package = mkOption {
+        type = types.package;
+        default = pkgs.jq;
+        defaultText = literalExample "pkgs.jq";
+        description = "jq package to use.";
+      };
+
       colors = mkOption {
         description = ''
           The colors used in colored JSON output.</para>
@@ -65,7 +72,7 @@ in {
   };
 
   config = mkIf cfg.enable {
-    home.packages = [ pkgs.jq ];
+    home.packages = [ cfg.package ];
 
     home.sessionVariables = let c = cfg.colors;
     in {

modules/programs/mangohud.nix

@@ -0,0 +1,106 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.mangohud;
+
+  settingsType = with types;
+    (oneOf [ bool int float str path (listOf (oneOf [ int str ])) ]);
+
+  renderOption = option:
+    rec {
+      int = toString option;
+      float = int;
+      path = int;
+      bool = "false";
+      string = option;
+      list = concatStringsSep "," (lists.forEach option (x: toString x));
+    }.${builtins.typeOf option};
+
+  renderLine = k: v: (if isBool v && v then k else "${k}=${renderOption v}");
+  renderSettings = attrs:
+    strings.concatStringsSep "\n" (attrsets.mapAttrsToList renderLine attrs)
+    + "\n";
+
+in {
+  options = {
+    programs.mangohud = {
+      enable = mkEnableOption "Mangohud";
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.mangohud;
+        defaultText = literalExample "pkgs.mangohud";
+        description = "The Mangohud package to install.";
+      };
+
+      enableSessionWide = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Sets environment variables so that 
+          MangoHud is started on any application that supports it.
+        '';
+      };
+
+      settings = mkOption {
+        type = with types; attrsOf settingsType;
+        default = { };
+        example = literalExample ''
+          {
+            output_folder = ~/Documents/mangohud/;
+            full = true;
+          }
+        '';
+        description = ''
+          Configuration written to
+          <filename>~/.config/MangoHud/MangoHud.conf</filename>. See
+          <link xlink:href="https://github.com/flightlessmango/MangoHud/blob/master/bin/MangoHud.conf"/>
+          for the default configuration.
+        '';
+      };
+
+      settingsPerApplication = mkOption {
+        type = with types; attrsOf (attrsOf settingsType);
+        default = { };
+        example = literalExample ''
+          {
+            mpv = {
+              no_display = true;
+            }
+          }
+        '';
+        description = ''
+          Sets MangoHud settings per application.
+          Configuration written to
+          <filename>~/.config/MangoHud/{application_name}.conf</filename>. See
+          <link xlink:href="https://github.com/flightlessmango/MangoHud/blob/master/bin/MangoHud.conf"/>
+          for the default configuration.
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [
+      (hm.assertions.assertPlatform "programs.mangohud" pkgs platforms.linux)
+    ];
+
+    home.packages = [ cfg.package ];
+
+    home.sessionVariables = mkIf cfg.enableSessionWide {
+      MANGOHUD = 1;
+      MANGOHUD_DLSYM = 1;
+    };
+
+    xdg.configFile = {
+      "MangoHud/MangoHud.conf" =
+        mkIf (cfg.settings != { }) { text = renderSettings cfg.settings; };
+    } // mapAttrs'
+      (n: v: nameValuePair "MangoHud/${n}.conf" { text = renderSettings v; })
+      cfg.settingsPerApplication;
+  };
+
+  meta.maintainers = with maintainers; [ zeratax ];
+}

modules/programs/neovim.nix

@@ -6,6 +6,8 @@ let
 
   cfg = config.programs.neovim;
 
+  jsonFormat = pkgs.formats.json { };
+
   extraPython3PackageType = mkOptionType {
     name = "extra-python3-packages";
     description = "python3 packages in python.withPackages format";
@@ -51,8 +53,7 @@ let
         (map (x: if x ? plugin && x.optional == true then x.plugin else null)
           cfg.plugins);
     };
-    customRC = cfg.extraConfig
-      + pkgs.lib.concatMapStrings pluginConfig cfg.plugins;
+    beforePlugins = "";
   };
 
   extraMakeWrapperArgs = lib.optionalString (cfg.extraPackages != [ ])
@@ -131,6 +132,15 @@ in {
         '';
       };
 
+      generatedConfigViml = mkOption {
+        type = types.lines;
+        visible = true;
+        readOnly = true;
+        description = ''
+          Generated vimscript config.
+        '';
+      };
+
       package = mkOption {
         type = types.package;
         default = pkgs.neovim-unwrapped;
@@ -218,6 +228,44 @@ in {
           This option is mutually exclusive with <varname>configure</varname>.
         '';
       };
+
+      coc = {
+        enable = mkEnableOption "Coc";
+
+        settings = mkOption {
+          type = jsonFormat.type;
+          default = { };
+          example = literalExample ''
+            {
+              "suggest.noselect" = true;
+              "suggest.enablePreview" = true;
+              "suggest.enablePreselect" = false;
+              "suggest.disableKind" = true;
+              languageserver = {
+                haskell = {
+                  command = "haskell-language-server-wrapper";
+                  args = [ "--lsp" ];
+                  rootPatterns = [
+                    "*.cabal"
+                    "stack.yaml"
+                    "cabal.project"
+                    "package.yaml"
+                    "hie.yaml"
+                  ];
+                  filetypes = [ "haskell" "lhaskell" ];
+                };
+              };
+            };
+          '';
+          description = ''
+            Extra configuration lines to add to
+            <filename>$XDG_CONFIG_HOME/nvim/coc-settings.json</filename>
+            See
+            <link xlink:href="https://github.com/neoclide/coc.nvim/wiki/Using-the-configuration-file" />
+            for options.
+          '';
+        };
+      };
     };
   };
 
@@ -226,7 +274,8 @@ in {
       inherit (cfg)
         extraPython3Packages withPython3 withNodeJs withRuby viAlias vimAlias;
       configure = cfg.configure // moduleConfigure;
-      plugins = cfg.plugins;
+      plugins = cfg.plugins
+        ++ optionals cfg.coc.enable [ pkgs.vimPlugins.coc-nvim ];
       customRC = cfg.extraConfig;
     };
 
@@ -240,13 +289,22 @@ in {
         configure.customRC -> programs.neovim.extraConfig
     '';
 
+    programs.neovim.generatedConfigViml = neovimConfig.neovimRcContent;
+
     home.packages = [ cfg.finalPackage ];
 
-    xdg.configFile."nvim/init.vim".text = neovimConfig.neovimRcContent;
+    xdg.configFile."nvim/init.vim" = mkIf (neovimConfig.neovimRcContent != "") {
+      text = neovimConfig.neovimRcContent;
+    };
+    xdg.configFile."nvim/coc-settings.json" = mkIf cfg.coc.enable {
+      source = jsonFormat.generate "coc-settings.json" cfg.coc.settings;
+    };
+
     programs.neovim.finalPackage = pkgs.wrapNeovimUnstable cfg.package
       (neovimConfig // {
         wrapperArgs = (lib.escapeShellArgs neovimConfig.wrapperArgs) + " "
           + extraMakeWrapperArgs;
+        wrapRc = false;
       });
 
     programs.bash.shellAliases = mkIf cfg.vimdiffAlias { vimdiff = "nvim -d"; };

modules/programs/obs-studio.nix

@@ -6,21 +6,6 @@ let
 
   cfg = config.programs.obs-studio;
 
-  mkPluginEnv = packages:
-    let
-      pluginDirs = map (pkg: "${pkg}/share/obs/obs-plugins") packages;
-      plugins = concatMapStringsSep " " (p: "${p}/*") pluginDirs;
-    in pkgs.runCommand "obs-studio-plugins" {
-      preferLocalBuild = true;
-      allowSubstitutes = false;
-    } ''
-      mkdir $out
-      [[ '${plugins}' ]] || exit 0
-      for plugin in ${plugins}; do
-        ln -s "$plugin" $out/
-      done
-    '';
-
 in {
   meta.maintainers = [ maintainers.adisbladis ];
 
@@ -37,9 +22,16 @@ in {
         '';
       };
 
+      finalPackage = mkOption {
+        type = types.package;
+        visible = false;
+        readOnly = true;
+        description = "Resulting customized OBS Studio package.";
+      };
+
       plugins = mkOption {
         default = [ ];
-        example = literalExample "[ pkgs.obs-linuxbrowser ]";
+        example = literalExample "[ pkgs.obs-studio-plugins.wlrobs ]";
         description = "Optional OBS plugins.";
         type = types.listOf types.package;
       };
@@ -47,9 +39,10 @@ in {
   };
 
   config = mkIf cfg.enable {
-    home.packages = [ cfg.package ];
-
-    xdg.configFile."obs-studio/plugins" =
-      mkIf (cfg.plugins != [ ]) { source = mkPluginEnv cfg.plugins; };
+    home.packages = [ cfg.finalPackage ];
+    programs.obs-studio.finalPackage =
+      pkgs.wrapOBS.override { obs-studio = cfg.package; } {
+        plugins = cfg.plugins;
+      };
   };
 }

modules/programs/password-store.nix

@@ -58,5 +58,8 @@ in {
   config = mkIf cfg.enable {
     home.packages = [ cfg.package ];
     home.sessionVariables = cfg.settings;
+
+    xsession.importedVariables = mkIf config.xsession.enable
+      (mapAttrsToList (name: value: name) cfg.settings);
   };
 }

modules/programs/piston-cli.nix

@@ -0,0 +1,46 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.piston-cli;
+  yamlFormat = pkgs.formats.yaml { };
+in {
+  meta.maintainers = with maintainers; [ ethancedwards8 ];
+
+  options.programs.piston-cli = {
+    enable = mkEnableOption "piston-cli, code runner";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.piston-cli;
+      defaultText = literalExample "pkgs.piston-cli";
+      description = "The piston-cli package to use.";
+    };
+
+    settings = mkOption {
+      type = yamlFormat.type;
+      default = { };
+      example = literalExample ''
+        {
+          theme = "emacs";
+          box_style = "MINIMAL_DOUBLE_HEAD";
+          prompt_continuation = "...";
+          prompt_start = ">>>";
+        }
+      '';
+      description = ''
+        Configuration written to
+        <filename>$XDG_CONFIG_HOME/piston-cli/config.yml</filename>.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+
+    xdg.configFile."piston-cli/config.yml" = mkIf (cfg.settings != { }) {
+      source = yamlFormat.generate "config.yml" cfg.settings;
+    };
+  };
+}

modules/programs/qutebrowser.nix

@@ -32,6 +32,8 @@ let
         ''config.bind("${k}", "${escape [ ''"'' ] c}", mode="${m}")'';
     in concatStringsSep "\n" (mapAttrsToList (formatKeyBinding m) b);
 
+  formatQuickmarks = n: s: "${n} ${s}";
+
 in {
   options.programs.qutebrowser = {
     enable = mkEnableOption "qutebrowser";
@@ -251,6 +253,21 @@ in {
       '';
     };
 
+    quickmarks = mkOption {
+      type = types.attrsOf types.str;
+      default = { };
+      description = ''
+        Quickmarks to add to qutebrowser's <filename>quickmarks</filename> file.
+        Note that when Home Manager manages your quickmarks, you cannot edit them at runtime.
+      '';
+      example = literalExample ''
+        {
+          nixpkgs = "https://github.com/NixOS/nixpkgs";
+          home-manager = "https://github.com/nix-community/home-manager";
+        }
+      '';
+    };
+
     extraConfig = mkOption {
       type = types.lines;
       default = "";
@@ -274,13 +291,44 @@ in {
       ++ optional (!cfg.enableDefaultBindings) "c.bindings.default = {}"
       ++ mapAttrsToList formatKeyBindings cfg.keyBindings
       ++ optional (cfg.extraConfig != "") cfg.extraConfig);
+
+    quickmarksFile = optionals (cfg.quickmarks != { }) concatStringsSep "\n"
+      ((mapAttrsToList formatQuickmarks cfg.quickmarks));
   in mkIf cfg.enable {
     home.packages = [ cfg.package ];
 
     home.file.".qutebrowser/config.py" =
       mkIf pkgs.stdenv.hostPlatform.isDarwin { text = qutebrowserConfig; };
 
+    home.file.".qutebrowser/quickmarks" =
+      mkIf (cfg.quickmarks != { } && pkgs.stdenv.hostPlatform.isDarwin) {
+        text = quickmarksFile;
+      };
+
     xdg.configFile."qutebrowser/config.py" =
-      mkIf pkgs.stdenv.hostPlatform.isLinux { text = qutebrowserConfig; };
+      mkIf pkgs.stdenv.hostPlatform.isLinux {
+        text = qutebrowserConfig;
+        onChange = ''
+          hash="$(echo -n $USER | md5sum | cut -d' ' -f1)"
+          socket="''${XDG_RUNTIME_DIR:-/run/user/$UID}/qutebrowser/ipc-$hash"
+          if [ -S $socket ]; then
+            echo "Reloading qutebrowser"
+            command=${
+              escapeShellArg (builtins.toJSON {
+                args = [ ":config-source" ];
+                target_arg = null;
+                protocol_version = 1;
+              })
+            }
+            $DRY_RUN_CMD echo $command | ${pkgs.socat}/bin/socat -lf /dev/null - UNIX-CONNECT:$socket
+          fi
+          unset hash socket command
+        '';
+      };
+
+    xdg.configFile."qutebrowser/quickmarks" =
+      mkIf (cfg.quickmarks != { } && pkgs.stdenv.hostPlatform.isLinux) {
+        text = quickmarksFile;
+      };
   };
 }

modules/programs/rbw.nix

@@ -0,0 +1,116 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.programs.rbw;
+
+  jsonFormat = pkgs.formats.json { };
+
+  inherit (pkgs.stdenv.hostPlatform) isDarwin;
+
+  settingsModule = with lib;
+    types.submodule {
+      freeformType = jsonFormat.type;
+      options = {
+        email = mkOption {
+          type = types.str;
+          example = "name@example.com";
+          description = "The email address for your bitwarden account.";
+        };
+
+        base_url = mkOption {
+          type = with types; nullOr str;
+          default = null;
+          example = "bitwarden.example.com";
+          description =
+            "The base-url for a self-hosted bitwarden installation.";
+        };
+
+        identity_url = mkOption {
+          type = with types; nullOr str;
+          default = null;
+          example = "identity.example.com";
+          description = "The identity url for your bitwarden installation.";
+        };
+
+        lock_timeout = mkOption {
+          type = types.ints.unsigned;
+          default = 3600;
+          example = 300;
+          description = ''
+            The amount of time that your login information should be cached.
+          '';
+        };
+
+        pinentry = mkOption {
+          type = with types; either package (enum pkgs.pinentry.flavors);
+          example = "gnome3";
+          default = "gtk2";
+          description = ''
+            Which pinentry interface to use. Beware that
+            <literal>pinentry-gnome3</literal> may not work on non-Gnome
+            systems. You can fix it by adding the following to your
+            system configuration:
+            <programlisting language="nix">
+            services.dbus.packages = [ pkgs.gcr ];
+            </programlisting>
+            For this reason, the default is <literal>gtk2</literal> for
+            now.
+          '';
+          # we want the program in the config
+          apply = val:
+            if builtins.isString val then
+              "${pkgs.pinentry.${val}}/bin/pinentry"
+            else
+              "${val}/${val.binaryPath or "bin/pinentry"}";
+        };
+      };
+    };
+in {
+  meta.maintainers = with lib.hm.maintainers; [ ambroisie ];
+
+  options.programs.rbw = with lib; {
+    enable = mkEnableOption "rwb, a CLI Bitwarden client";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.rbw;
+      defaultText = literalExample "pkgs.rbw";
+      description = ''
+        Package providing the <command>rbw</command> tool and its
+        <command>rbw-agent</command> daemon.
+      '';
+    };
+
+    settings = mkOption {
+      type = types.nullOr settingsModule;
+      default = null;
+      example = literalExample ''
+        {
+          email = "name@example.com";
+          lock_timeout = 300;
+          pinentry = "gnome3";
+        }
+      '';
+      description = ''
+        rbw configuration, if not defined the configuration will not be
+        managed by Home Manager.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable (lib.mkMerge [
+    {
+      home.packages = [ cfg.package ];
+    }
+
+    # Only manage configuration if not empty
+    (lib.mkIf (cfg.settings != null && !isDarwin) {
+      xdg.configFile."rbw/config.json".source =
+        jsonFormat.generate "rbw-config.json" cfg.settings;
+    })
+
+    (lib.mkIf (cfg.settings != null && isDarwin) {
+      home.file."Library/Application Support/rbw/config.json".source =
+        jsonFormat.generate "rbw-config.json" cfg.settings;
+    })
+  ]);
+}

modules/programs/rofi.nix

@@ -207,6 +207,15 @@ in {
       '';
     };
 
+    plugins = mkOption {
+      default = [ ];
+      type = types.listOf types.package;
+      description = ''
+        List of rofi plugins to be installed.
+      '';
+      example = literalExample "[ pkgs.rofi-calc ]";
+    };
+
     width = mkOption {
       default = null;
       type = types.nullOr types.int;
@@ -261,7 +270,7 @@ in {
       description = ''
         Path to the terminal which will be used to run console applications
       '';
-      example = "\${pkgs.gnome3.gnome_terminal}/bin/gnome-terminal";
+      example = "\${pkgs.gnome.gnome_terminal}/bin/gnome-terminal";
     };
 
     separator = mkOption {
@@ -393,19 +402,29 @@ in {
   };
 
   config = mkIf cfg.enable {
-    assertions = [{
-      assertion = cfg.theme == null || cfg.colors == null;
-      message = ''
-        Cannot use the rofi options 'theme' and 'colors' simultaneously.
-      '';
-    }];
+    assertions = [
+      (hm.assertions.assertPlatform "programs.rofi" pkgs platforms.linux)
+      {
+        assertion = cfg.theme == null || cfg.colors == null;
+        message = ''
+          Cannot use the rofi options 'theme' and 'colors' simultaneously.
+        '';
+      }
+    ];
 
     lib.formats.rasi.mkLiteral = value: {
       _type = "literal";
       inherit value;
     };
 
-    home.packages = [ cfg.package ];
+    home.packages = let
+      rofiWithPlugins = cfg.package.override
+        (old: rec { plugins = (old.plugins or [ ]) ++ cfg.plugins; });
+      rofiPackage = if builtins.hasAttr "override" cfg.package then
+        rofiWithPlugins
+      else
+        cfg.package;
+    in [ rofiPackage ];
 
     home.file."${cfg.configPath}".text = toRasi {
       configuration = ({

modules/programs/senpai.nix

@@ -0,0 +1,73 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.senpai;
+  cfgFmt = pkgs.formats.yaml { };
+in {
+  options.programs.senpai = {
+    enable = mkEnableOption "senpai";
+    package = mkOption {
+      type = types.package;
+      default = pkgs.senpai;
+      defaultText = literalExample "pkgs.senpai";
+      description = "The <literal>senpai</literal> package to use.";
+    };
+    config = mkOption {
+      type = types.submodule {
+        freeformType = cfgFmt.type;
+        options = {
+          addr = mkOption {
+            type = types.str;
+            description = ''
+              The address (host[:port]) of the IRC server. senpai uses TLS
+              connections by default unless you specify no-tls option. TLS
+              connections default to port 6697, plain-text use port 6667.
+            '';
+          };
+          nick = mkOption {
+            type = types.str;
+            description = ''
+              Your nickname, sent with a NICK IRC message. It mustn't contain
+              spaces or colons (:).
+            '';
+          };
+          password = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+            description = ''
+              Your password, used for SASL authentication. Note that it will
+              reside world-readable in the Nix store.
+            '';
+          };
+          no-tls = mkOption {
+            type = types.bool;
+            default = false;
+            description = "Disables TLS encryption.";
+          };
+        };
+      };
+      example = literalExample ''
+        {
+          addr = "libera.chat:6697";
+          nick = "nicholas";
+          password = "verysecurepassword";
+        }
+      '';
+      description = ''
+        Configuration for senpai. For a complete list of options, see
+        <citerefentry><refentrytitle>senpai</refentrytitle>
+        <manvolnum>5</manvolnum></citerefentry>.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+    xdg.configFile."senpai/senpai.yaml".source =
+      cfgFmt.generate "senpai.yaml" cfg.config;
+  };
+
+  meta.maintainers = [ hm.maintainers.malvo ];
+}

modules/programs/sm64ex.nix

@@ -0,0 +1,128 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.sm64ex;
+
+  # This is required for tests, we cannot overwrite the dummy package.
+  package = if cfg.region == null && cfg.baserom == null
+  && cfg.extraCompileFlags == null then
+    cfg.package
+
+  else
+    cfg.package.override (attrs:
+      { } // optionalAttrs (cfg.region != null) { region = cfg.region; }
+      // optionalAttrs (cfg.baserom != null) { baseRom = cfg.baserom; }
+      // optionalAttrs (cfg.extraCompileFlags != null) {
+        compileFlags = cfg.extraCompileFlags;
+      });
+
+  mkConfig = key: value:
+    let
+      generatedValue = if isBool value then
+        (if value then "true" else "false")
+      else if isList value then
+        concatStringsSep " " value
+      else
+        toString value;
+    in "${key} ${generatedValue}";
+
+in {
+  meta.maintainers = [ maintainers.ivar ];
+
+  options.programs.sm64ex = {
+    enable = mkEnableOption "sm64ex";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.sm64ex;
+      description = "The sm64ex package to use.";
+    };
+
+    region = mkOption {
+      type = types.nullOr (types.enum [ "us" "eu" "jp" ]);
+      default = null;
+      defaultText =
+        literalExample "us"; # This is set both in nixpkgs and upstream
+      description = ''
+        Your baserom's region. Note that only "us", "eu", and "jp" are supported.
+      '';
+      example = literalExample "jp";
+    };
+
+    baserom = mkOption {
+      type = types.nullOr types.path;
+      default = null;
+      description =
+        "The path to the Super Mario 64 baserom to extract assets from.";
+      example = literalExample "/home/foo/baserom.us.z64";
+    };
+
+    extraCompileFlags = mkOption {
+      type = with types; nullOr (listOf str);
+      default = null;
+      description = ''
+        Extra flags to pass to the compiler. See
+        <link xlink:href="https://github.com/sm64pc/sm64ex/wiki/Build-options"/>
+        for more information.
+      '';
+      example = literalExample ''
+        [
+          "BETTERCAMERA=1"
+          "NODRAWINGDISTANCE=1"
+        ];
+      '';
+    };
+
+    settings = mkOption {
+      type = with types;
+        nullOr (attrsOf (either str (either int (either bool (listOf str)))));
+      default = null;
+      description =
+        "Settings for sm64ex's <filename>~/.local/share/sm64pc/sm64config.txt</filename> file.";
+      example = literalExample ''
+        {
+          fullscreen = false;
+          window_x = 0;
+          window_y = 0;
+          window_w = 1920;
+          window_h = 1080;
+          vsync = 1;
+          texture_filtering = 1;
+          master_volume = 127;
+          music_volume = 127;
+          sfx_volume = 127;
+          env_volume = 127;
+          key_a = [ "0026" "1000" "1103" ];
+          key_b = [ "0033" "1002" "1101" ];
+          key_start = [ "0039" "1006" "ffff" ];
+          key_l = [ "0034" "1007" "1104" ];
+          key_r = [ "0036" "100a" "1105" ];
+          key_z = [ "0025" "1009" "1102" ];
+          key_cup = [ "100b" "ffff" "ffff" ];
+          key_cdown = [ "100c" "ffff" "ffff" ];
+          key_cleft = [ "100d" "ffff" "ffff" ];
+          key_cright = [ "100e" "ffff" "ffff" ];
+          key_stickup = [ "0011" "ffff" "ffff" ];
+          key_stickdown = [ "001f" "ffff" "ffff" ];
+          key_stickleft = [ "001e" "ffff" "ffff" ];
+          key_stickright = [ "0020" "ffff" "ffff" ];
+          stick_deadzone = 16;
+          rumble_strength = 10;
+          skip_intro = 1;
+        };
+      '';
+    };
+  };
+
+  config = let
+    configFile = optionals (cfg.settings != null)
+      (concatStringsSep "\n" ((mapAttrsToList mkConfig cfg.settings)));
+  in mkIf cfg.enable {
+    home.packages = [ package ];
+
+    xdg.dataFile."sm64pc/sm64config.txt" =
+      mkIf (cfg.settings != null) { text = configFile; };
+  };
+}

modules/programs/taskwarrior.nix

@@ -98,8 +98,6 @@ in {
   config = mkIf cfg.enable {
     home.packages = [ pkgs.taskwarrior ];
 
-    home.file."${cfg.dataLocation}/.keep".text = "";
-
     home.file.".taskrc".text = ''
       data.location=${cfg.dataLocation}
       ${includeTheme cfg.colorTheme}

modules/programs/terminator.nix

@@ -0,0 +1,75 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.programs.terminator;
+
+  toValue = val:
+    if val == null then
+      "None"
+    else if val == true then
+      "True"
+    else if val == false then
+      "False"
+    else
+      ''"${toString val}"'';
+
+  toConfigObject = let
+    toKey = depth: key:
+      if depth == 0 then key else toKey (depth - 1) "[${key}]";
+    toConfigObjectLevel = depth: obj:
+      flatten (mapAttrsToList (key: val:
+        if isAttrs val then
+          [ (toKey depth key) ] ++ toConfigObjectLevel (depth + 1) val
+        else
+          [ "${key} = ${toValue val}" ]) obj);
+  in obj: concatStringsSep "\n" (toConfigObjectLevel 1 obj);
+
+in {
+  meta.maintainers = [ maintainers.chisui ];
+
+  options.programs.terminator = {
+    enable = mkEnableOption "terminator, a tiling terminal emulator";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.terminator;
+      example = literalExample "pkgs.terminator";
+      description = "terminator package to install.";
+    };
+
+    config = mkOption {
+      default = { };
+      description = ''
+        configuration for terminator.
+        </para><para>
+        For a list of all possible options refer to the
+        <citerefentry>
+          <refentrytitle>terminator_config</refentrytitle>
+          <manvolnum>5</manvolnum>
+        </citerefentry>
+        man page.
+      '';
+      type = types.attrsOf types.anything;
+      example = literalExample ''
+        {
+          global_config.borderless = true;
+          profiles.default.background_color = "#002b36";
+        }
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [
+      (hm.assertions.assertPlatform "programs.terminator" pkgs platforms.linux)
+    ];
+
+    home.packages = [ cfg.package ];
+
+    xdg.configFile."terminator/config" =
+      mkIf (cfg.config != { }) { text = toConfigObject cfg.config; };
+  };
+}

modules/programs/texlive.nix

@@ -6,14 +6,21 @@ let
 
   cfg = config.programs.texlive;
 
-  texlivePkgs = cfg.extraPackages pkgs.texlive;
+  texlive = cfg.packageSet;
+  texlivePkgs = cfg.extraPackages texlive;
 
 in {
   meta.maintainers = [ maintainers.rycee ];
 
   options = {
     programs.texlive = {
-      enable = mkEnableOption "Texlive";
+      enable = mkEnableOption "TeX Live";
+
+      packageSet = mkOption {
+        default = pkgs.texlive;
+        defaultText = literalExample "pkgs.texlive";
+        description = "TeX Live package set to use.";
+      };
 
       extraPackages = mkOption {
         default = tpkgs: { inherit (tpkgs) collection-basic; };
@@ -21,12 +28,12 @@ in {
         example = literalExample ''
           tpkgs: { inherit (tpkgs) collection-fontsrecommended algorithms; }
         '';
-        description = "Extra packages available to Texlive.";
+        description = "Extra packages available to TeX Live.";
       };
 
       package = mkOption {
         type = types.package;
-        description = "Resulting customized Texlive package.";
+        description = "Resulting customized TeX Live package.";
         readOnly = true;
       };
     };
@@ -41,6 +48,6 @@ in {
 
     home.packages = [ cfg.package ];
 
-    programs.texlive.package = pkgs.texlive.combine texlivePkgs;
+    programs.texlive.package = texlive.combine texlivePkgs;
   };
 }

modules/programs/waybar.nix

@@ -353,16 +353,26 @@ in {
     in allWarnings;
 
   in mkIf cfg.enable (mkMerge [
-    { home.packages = [ cfg.package ]; }
+    {
+      assertions = [
+        (lib.hm.assertions.assertPlatform "programs.waybar" pkgs
+          lib.platforms.linux)
+      ];
+
+      home.packages = [ cfg.package ];
+    }
+
     (mkIf (cfg.settings != [ ]) {
       # Generate warnings about defined but unreferenced modules
       inherit warnings;
 
       xdg.configFile."waybar/config".source = configSource;
     })
+
     (mkIf (cfg.style != null) {
       xdg.configFile."waybar/style.css".text = cfg.style;
     })
+
     (mkIf cfg.systemd.enable {
       systemd.user.services.waybar = {
         Unit = {

modules/programs/xmobar.nix

@@ -0,0 +1,59 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.programs.xmobar;
+in {
+  options.programs.xmobar = {
+    enable = mkEnableOption "Xmobar, a minimalistic status bar";
+
+    package = mkOption {
+      default = pkgs.haskellPackages.xmobar;
+      defaultText = literalExample "pkgs.haskellPackages.xmobar";
+      type = types.package;
+      description = ''
+        Package providing the <command>xmobar</command> binary.
+      '';
+    };
+
+    extraConfig = mkOption {
+      default = "";
+      example = literalExample ''
+        Config
+          { font        = "Fira Code"
+          , borderColor = "#d0d0d0"
+          , border      = FullB
+          , borderWidth = 3
+          , bgColor     = "#222"
+          , fgColor     = "grey"
+          , position    = TopSize C 99 30
+          , commands    =
+              [ Run Cpu ["-t", "cpu: <fc=#4eb4fa><bar> <total>%</fc>"] 10
+              , Run Network "enp3s0" ["-S", "True", "-t", "eth: <fc=#4eb4fa><rx></fc>/<fc=#4eb4fa><tx></fc>"] 10
+              , Run Memory ["-t","mem: <fc=#4eb4fa><usedbar> <usedratio>%</fc>"] 10
+              , Run Date "date: <fc=#4eb4fa>%a %d %b %Y %H:%M:%S </fc>" "date" 10
+              , Run StdinReader
+              ]
+          , sepChar     = "%"
+          , alignSep    = "}{"
+          , template    = "  %StdinReader% | %cpu% | %memory% | %enp3s0%  }{%date%  "
+          }
+      '';
+      type = types.lines;
+      description = ''
+        Extra configuration lines to add to
+        <filename>$XDG_CONFIG_HOME/xmobar/.xmobarrc</filename>.
+        See
+        <link xlink:href="https://xmobar.org/#configuration" />
+        for options.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+    xdg.configFile."xmobar/.xmobarrc".text = cfg.extraConfig;
+  };
+
+  meta.maintainers = with maintainers; [ t4ccer ];
+}

modules/programs/zsh.nix

@@ -279,11 +279,22 @@ in
         type = types.bool;
       };
 
+      completionInit = mkOption {
+        default = "autoload -U compinit && compinit";
+        description = "Initialization commands to run when completion is enabled.";
+        type = types.lines;
+      };
+
       enableAutosuggestions = mkOption {
         default = false;
         description = "Enable zsh autosuggestions";
       };
 
+      enableSyntaxHighlighting = mkOption {
+        default = false;
+        description = "Enable zsh syntax highlighting";
+      };
+
       history = mkOption {
         type = historyModule;
         default = {};
@@ -469,13 +480,17 @@ in
         # calling it twice causes slight start up slowdown
         # as all $fpath entries will be traversed again.
         ${optionalString (cfg.enableCompletion && !cfg.oh-my-zsh.enable && !cfg.prezto.enable)
-          "autoload -U compinit && compinit"
+          cfg.completionInit
         }
 
         ${optionalString cfg.enableAutosuggestions
           "source ${pkgs.zsh-autosuggestions}/share/zsh-autosuggestions/zsh-autosuggestions.zsh"
         }
 
+        ${optionalString cfg.enableSyntaxHighlighting
+          "source ${pkgs.zsh-syntax-highlighting}/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"
+        }
+
         # Environment variables
         . "${config.home.profileDirectory}/etc/profile.d/hm-session-vars.sh"
         ${envVarsStr}
@@ -500,7 +515,7 @@ in
             (builtins.readFile "${pkgs.zsh-prezto}/share/zsh-prezto/runcoms/zshrc")}
 
         ${concatStrings (map (plugin: ''
-          if [ -f "$HOME/${pluginsDir}/${plugin.name}/${plugin.file}" ]; then
+          if [[ -f "$HOME/${pluginsDir}/${plugin.name}/${plugin.file}" ]]; then
             source "$HOME/${pluginsDir}/${plugin.name}/${plugin.file}"
           fi
         '') cfg.plugins)}

modules/services/barrier.nix

@@ -6,6 +6,12 @@ in {
 
   meta.maintainers = with maintainers; [ kritnich ];
 
+  imports = [
+    (mkRemovedOptionModule [ "services" "barrier" "client" "tray" ] ''
+      The tray option is non-functional and has been removed.
+    '')
+  ];
+
   options.services.barrier = {
 
     client = {
@@ -29,8 +35,6 @@ in {
         '';
       };
 
-      tray = mkEnableOption "the system tray icon" // { default = true; };
-
       enableCrypto = mkEnableOption "crypto (SSL) plugin" // {
         default = true;
       };
@@ -51,6 +55,11 @@ in {
   };
 
   config = mkIf cfg.client.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.barrier" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.barrierc = {
       Unit = {
         Description = "Barrier Client daemon";
@@ -61,7 +70,6 @@ in {
       Service.ExecStart = with cfg.client;
         toString ([ "${pkgs.barrier}/bin/barrierc" ]
           ++ optional (name != null) "--name ${name}"
-          ++ optional (!tray) "--no-tray"
           ++ optional enableCrypto "--enable-crypto"
           ++ optional enableDragDrop "--enable-drag-drop" ++ extraFlags
           ++ [ server ]);

modules/services/caffeine.nix

@@ -14,6 +14,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.caffeine" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.caffeine = {
       Unit = { Description = "caffeine"; };
 

modules/services/cbatticon.nix

@@ -98,6 +98,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.cbatticon" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ package ];
 
     systemd.user.services.cbatticon = {

modules/services/clipmenu.nix

@@ -21,6 +21,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.clipmenu" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ cfg.package ];
 
     systemd.user.services.clipmenu = {

modules/services/devilspie2.nix

@@ -0,0 +1,47 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let cfg = config.services.devilspie2;
+in {
+  meta.maintainers = [ maintainers.dawidsowa ];
+
+  options = {
+    services.devilspie2 = {
+      enable = mkEnableOption ''
+        Devilspie2, a window matching utility, allowing the user to
+        perform scripted actions on windows as they are created'';
+
+      config = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''
+          Content of file placed in the devilspie2 config directory.
+        '';
+        example = ''
+          if (get_window_class() == "Gnome-terminal") then
+              make_always_on_top();
+          end
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.devilspie2" pkgs
+        lib.platforms.linux)
+    ];
+
+    systemd.user.services.devilspie2 = {
+      Service.ExecStart = "${pkgs.devilspie2}/bin/devilspie2";
+      Unit = {
+        Description = "devilspie2";
+        After = [ "graphical-session-pre.target" ];
+        PartOf = [ "graphical-session.target" ];
+      };
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+
+    xdg.configFile."devilspie2/config.lua".text = cfg.config;
+  };
+}

modules/services/dropbox.nix

@@ -28,6 +28,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.dropbox" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ pkgs.dropbox-cli ];
 
     systemd.user.services.dropbox = {

modules/services/dunst.nix

@@ -25,7 +25,7 @@ let
     options = {
       package = mkOption {
         type = types.package;
-        example = literalExample "pkgs.gnome3.adwaita-icon-theme";
+        example = literalExample "pkgs.gnome.adwaita-icon-theme";
         description = "Package providing the theme.";
       };
 
@@ -78,7 +78,15 @@ in {
       };
 
       settings = mkOption {
-        type = with types; attrsOf (attrsOf eitherStrBoolIntList);
+        type = types.submodule {
+          freeformType = with types; attrsOf (attrsOf eitherStrBoolIntList);
+          options = {
+            global.icon_path = mkOption {
+              type = types.separatedString ":";
+              description = "Paths where dunst will look for icons.";
+            };
+          };
+        };
         default = { };
         description = "Configuration written to ~/.config/dunst/dunstrc";
         example = literalExample ''
@@ -103,7 +111,7 @@ in {
 
   config = mkIf cfg.enable (mkMerge [
     {
-      home.packages = [ (getOutput "man" pkgs.dunst) ];
+      home.packages = [ cfg.package ];
 
       xdg.dataFile."dbus-1/services/org.knopwob.dunst.service".source =
         "${pkgs.dunst}/share/dbus-1/services/org.knopwob.dunst.service";
@@ -138,11 +146,14 @@ in {
           "status"
           "stock"
         ];
-      in concatStringsSep ":" (concatMap (theme:
-        concatMap (basePath:
-          map (category:
-            "${basePath}/share/icons/${theme.name}/${theme.size}/${category}")
-          categories) basePaths) themes);
+
+        mkPath = { basePath, theme, category }:
+          "${basePath}/share/icons/${theme.name}/${theme.size}/${category}";
+      in concatMapStringsSep ":" mkPath (cartesianProductOfSets {
+        basePath = basePaths;
+        theme = themes;
+        category = categories;
+      });
 
       systemd.user.services.dunst = {
         Unit = {

modules/services/dwm-status.nix

@@ -53,6 +53,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.dwm-status" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.dwm-status = {
       Unit = {
         Description = "DWM status service";

modules/services/emacs.nix

@@ -9,6 +9,9 @@ let
   emacsBinPath = "${cfg.package}/bin";
   emacsVersion = getVersion cfg.package;
 
+  clientWMClass =
+    if versionAtLeast emacsVersion "28" then "Emacsd" else "Emacs";
+
   # Adapted from upstream emacs.desktop
   clientDesktopItem = pkgs.writeTextDir "share/applications/emacsclient.desktop"
     (generators.toINI { } {
@@ -24,26 +27,16 @@ let
         GenericName = "Text Editor";
         MimeType =
           "text/english;text/plain;text/x-makefile;text/x-c++hdr;text/x-c++src;text/x-chdr;text/x-csrc;text/x-java;text/x-moc;text/x-pascal;text/x-tcl;text/x-tex;application/x-shellscript;text/x-c;text/x-c++;";
-        Categories = "Utility;TextEditor;";
-        StartupWMClass = "Emacs";
+        Categories = "Development;TextEditor;";
+        Keywords = "Text;Editor;";
+        StartupWMClass = clientWMClass;
       };
     });
 
   # Match the default socket path for the Emacs version so emacsclient continues
-  # to work without wrapping it. It might be worthwhile to allow customizing the
-  # socket path, but we would want to wrap emacsclient in the user profile to
-  # connect to the alternative socket by default for Emacs 26, and set
-  # EMACS_SOCKET_NAME for Emacs 27.
-  #
-  # As systemd doesn't perform variable expansion for the ListenStream param, we
-  # would also have to solve the problem of matching the shell path to the path
-  # used in the socket unit, which would likely involve templating. It seems of
-  # little value for the most common use case of one Emacs daemon per user
-  # session.
-  socketPath = if versionAtLeast emacsVersion "27" then
-    "%t/emacs/server"
-  else
-    "%T/emacs%U/server";
+  # to work without wrapping it.
+  socketDir = "%t/emacs";
+  socketPath = "${socketDir}/server";
 
 in {
   meta.maintainers = [ maintainers.tadfisher ];
@@ -82,24 +75,30 @@ in {
 
   config = mkIf cfg.enable (mkMerge [
     {
-      assertions = [{
-        assertion = cfg.socketActivation.enable
-          -> versionAtLeast emacsVersion "26";
-        message = "Socket activation requires Emacs 26 or newer.";
-      }];
+      assertions = [
+        (lib.hm.assertions.assertPlatform "services.emacs" pkgs
+          lib.platforms.linux)
+      ];
 
       systemd.user.services.emacs = {
         Unit = {
-          Description = "Emacs: the extensible, self-documenting text editor";
+          Description = "Emacs text editor";
           Documentation =
             "info:emacs man:emacs(1) https://gnu.org/software/emacs/";
 
           # Avoid killing the Emacs session, which may be full of
           # unsaved buffers.
           X-RestartIfChanged = false;
+        } // optionalAttrs (cfg.socketActivation.enable) {
+          # Emacs deletes its socket when shutting down, which systemd doesn't
+          # handle, resulting in a server without a socket.
+          # See https://github.com/nix-community/home-manager/issues/2018
+          RefuseManualStart = true;
         };
 
         Service = {
+          Type = "notify";
+
           # We wrap ExecStart in a login shell so Emacs starts with the user's
           # environment, most importantly $PATH and $NIX_PROFILES. It may be
           # worth investigating a more targeted approach for user services to
@@ -113,10 +112,19 @@ in {
               optionalString cfg.socketActivation.enable
               "=${escapeShellArg socketPath}"
             }"'';
-          # We use '(kill-emacs 0)' to avoid exiting with a failure code, which
-          # would restart the service immediately.
-          ExecStop = "${emacsBinPath}/emacsclient --eval '(kill-emacs 0)'";
+
+          # Emacs will exit with status 15 after having received SIGTERM, which
+          # is the default "KillSignal" value systemd uses to stop services.
+          SuccessExitStatus = 15;
+
           Restart = "on-failure";
+        } // optionalAttrs (cfg.socketActivation.enable) {
+          # Use read-only directory permissions to prevent emacs from
+          # deleting systemd's socket file before exiting.
+          ExecStartPost =
+            "${pkgs.coreutils}/bin/chmod --changes -w ${socketDir}";
+          ExecStopPost =
+            "${pkgs.coreutils}/bin/chmod --changes +w ${socketDir}";
         };
       } // optionalAttrs (!cfg.socketActivation.enable) {
         Install = { WantedBy = [ "default.target" ]; };
@@ -128,7 +136,7 @@ in {
     (mkIf cfg.socketActivation.enable {
       systemd.user.sockets.emacs = {
         Unit = {
-          Description = "Emacs: the extensible, self-documenting text editor";
+          Description = "Emacs text editor";
           Documentation =
             "info:emacs man:emacs(1) https://gnu.org/software/emacs/";
         };

modules/services/etesync-dav.nix

@@ -35,7 +35,7 @@ in {
       example = literalExample ''
         {
           ETESYNC_LISTEN_ADDRESS = "localhost";
-          ETESYNC_LISTEN_PORT = 37385;
+          ETESYNC_LISTEN_PORT = 37358;
         }
       '';
       description = ''
@@ -45,6 +45,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.etesync-dav" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ cfg.package ];
 
     systemd.user.services.etesync-dav = {

modules/services/flameshot.nix

@@ -13,6 +13,11 @@ in {
   options = { services.flameshot = { enable = mkEnableOption "Flameshot"; }; };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.flameshot" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ package ];
 
     systemd.user.services.flameshot = {

modules/services/fluidsynth.nix

@@ -37,6 +37,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.fluidsynth" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.fluidsynth = {
       Unit = {
         Description = "FluidSynth Daemon";

modules/services/getmail.nix

@@ -37,6 +37,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.getmail" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.getmail = {
       Unit = { Description = "getmail email fetcher"; };
       Service = { ExecStart = "${pkgs.getmail}/bin/getmail ${configFiles}"; };

modules/services/gnome-keyring.nix

@@ -25,6 +25,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.gnome-keyring" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.gnome-keyring = {
       Unit = {
         Description = "GNOME Keyring";
@@ -36,7 +41,7 @@ in {
           args = concatStringsSep " " ([ "--start" "--foreground" ]
             ++ optional (cfg.components != [ ])
             ("--components=" + concatStringsSep "," cfg.components));
-        in "${pkgs.gnome3.gnome-keyring}/bin/gnome-keyring-daemon ${args}";
+        in "${pkgs.gnome.gnome-keyring}/bin/gnome-keyring-daemon ${args}";
         Restart = "on-abort";
       };
 

modules/services/grobi.nix

@@ -71,6 +71,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.grobi" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.grobi = {
       Unit = {
         Description = "grobi display auto config daemon";

modules/services/hound.nix

@@ -59,6 +59,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.hound" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ pkgs.hound ];
 
     systemd.user.services.hound = {

modules/services/imapnotify.nix

@@ -77,6 +77,8 @@ in {
             + concatMapStringsSep ", " (a: a.name) badAccounts;
         };
     in [
+      (lib.hm.assertions.assertPlatform "services.imapnotify" pkgs
+        lib.platforms.linux)
       (checkAccounts (a: a.maildir == null) "maildir configuration")
       (checkAccounts (a: a.imap == null) "IMAP configuration")
       (checkAccounts (a: a.passwordCommand == null) "password command")

modules/services/kanshi.nix

@@ -187,6 +187,10 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.kanshi" pkgs
+        lib.platforms.linux)
+    ];
 
     xdg.configFile."kanshi/config".text = ''
       ${concatStringsSep "\n" (mapAttrsToList profileStr cfg.profiles)}

modules/services/kbfs.nix

@@ -32,6 +32,11 @@ in {
   };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.kbfs" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.kbfs = {
       Unit = {
         Description = "Keybase File System";

modules/services/keybase.nix

@@ -10,6 +10,11 @@ in {
   options.services.keybase.enable = mkEnableOption "Keybase";
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.keybase" pkgs
+        lib.platforms.linux)
+    ];
+
     home.packages = [ pkgs.keybase ];
 
     systemd.user.services.keybase = {

modules/services/keynav.nix

@@ -10,6 +10,11 @@ in {
   options.services.keynav = { enable = mkEnableOption "keynav"; };
 
   config = mkIf cfg.enable {
+    assertions = [
+      (lib.hm.assertions.assertPlatform "services.keynav" pkgs
+        lib.platforms.linux)
+    ];
+
     systemd.user.services.keynav = {
       Unit = {
         Description = "keynav";