eww: add module

Closes #2682

.github/CODEOWNERS

@@ -76,6 +76,8 @@
 
 /modules/programs/emacs.nix                           @rycee
 
+/modules/programs/eww.nix                             @mainrs
+
 /modules/programs/exa.nix                             @kalhauge
 
 /modules/programs/firefox.nix                         @rycee

modules/misc/news.nix

@@ -2410,6 +2410,13 @@ in
           A new module is available: 'programs.zellij'.
         '';
       }
+
+      {
+        time = "2022-02-17T17:12:46+00:00";
+        message = ''
+          A new module is available: 'programs.eww'.
+        '';
+      }
     ];
   };
 }

modules/modules.nix

@@ -60,6 +60,7 @@ let
     ./programs/direnv.nix
     ./programs/eclipse.nix
     ./programs/emacs.nix
+    ./programs/eww.nix
     ./programs/exa.nix
     ./programs/feh.nix
     ./programs/firefox.nix

modules/programs/eww.nix

@@ -0,0 +1,39 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.programs.eww;
+
+in {
+  meta.maintainers = [ maintainers.mainrs ];
+
+  options.programs.eww = {
+    enable = mkEnableOption "eww";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.eww;
+      defaultText = literalExpression "pkgs.eww";
+      example = literalExpression "pkgs.eww";
+      description = ''
+        The eww package to install.
+      '';
+    };
+
+    configDir = mkOption {
+      type = types.path;
+      example = literalExpression "./eww-config-dir";
+      description = ''
+        The directory that gets symlinked to
+        <filename>$XDG_CONFIG_HOME/eww</filename>.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+    xdg.configFile."eww".source = cfg.configDir;
+  };
+}