rplot: patch scales and fontconfig

garlic/pp/rplot.nix

@@ -3,7 +3,16 @@
 , rWrapper
 , rPackages
 , fontconfig
+, dejavu_fonts
+, liberation_ttf
+, noto-fonts
+, makeFontsConf
+, makeFontsCache
 , jq
+, fetchFromGitHub
+, writeText
+, runCommand
+, glibcLocales
 }:
 
 {
@@ -16,19 +25,123 @@
 with stdenv.lib;
 
 let
-  customR = rWrapper.override {
-    packages = with rPackages; [ tidyverse viridis egg ] ++ extraRPackages;
+  scalesPatched = with rPackages; buildRPackage {
+    name = "scales";
+    src = fetchFromGitHub {
+      owner = "mikmart";
+      repo = "scales";
+      #ref = "label-bytes";
+      rev = "fa7d91c765b6b5d2f682c7c22e0478d96c2ea76c";
+      sha256 = "10dsyxp9pxzdmg04xpnrxqhc4qfhbkr3jhx8whfr7z27wgfrr1n3";
+    };
+    propagatedBuildInputs = [ farver labeling lifecycle munsell R6 RColorBrewer viridisLite ];
+    nativeBuildInputs = [ farver labeling lifecycle munsell R6 RColorBrewer viridisLite ];
   };
 
+  customR = rWrapper.override {
+    packages = with rPackages; [ scalesPatched tidyverse viridis egg
+      Cairo extrafont ] ++ extraRPackages;
+  };
+
+  myFonts = [
+    dejavu_fonts
+    #noto-fonts
+    #liberation_ttf
+  ];
+
+  cacheConf =
+  let
+    cache = makeFontsCache { fontDirectories = myFonts; };
+  in
+  writeText "fc-00-nixos-cache.conf" ''
+    <?xml version='1.0'?>
+    <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+    <fontconfig>
+      <!-- Font directories -->
+      ${concatStringsSep "\n" (map (font: "<dir>${font}</dir>") myFonts)}
+      ${optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+      <!-- Pre-generated font caches -->
+      <cachedir>${cache}</cachedir>
+      ''}
+    </fontconfig>
+  '';
+
+  # default fonts configuration file
+  # priority 52
+  defaultFontsConf =
+    let genDefault = fonts: name:
+      optionalString (fonts != []) ''
+        <alias binding="same">
+          <family>${name}</family>
+          <prefer>
+          ${concatStringsSep ""
+          (map (font: ''
+            <family>${font}</family>
+          '') fonts)}
+          </prefer>
+        </alias>
+      '';
+    in
+    writeText "fc-52-nixos-default-fonts.conf" ''
+    <?xml version='1.0'?>
+    <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+    <fontconfig>
+      <!-- Default fonts -->
+      ${genDefault [ "DejaVu Sans" ]      "sans-serif"}
+      ${genDefault [ "DejaVu Serif" ]     "serif"}
+      ${genDefault [ "DejaVu Sans Mono" ] "monospace"}
+      ${genDefault [ "Noto Color Emoji"]  "emoji"}
+    </fontconfig>
+  '';
+
+  fontConfPath =
+  let
+    fixedConf = runCommand "fonts-fixed.conf" {
+      preferLocalBuild = true;
+    } ''
+      head --lines=-2 ${fontconfig.out}/etc/fonts/fonts.conf >> $out
+
+      cat >> $out << 'EOF'
+      <!--
+       Load local customization files, but don't complain
+       if there aren't any
+      -->
+      <include ignore_missing="yes">conf.d</include>
+      EOF
+
+      tail -2 ${fontconfig.out}/etc/fonts/fonts.conf >> $out
+    '';
+  in
+  runCommand "fontconfig-conf" {
+    preferLocalBuild = true;
+  } ''
+    dst=$out/etc/fonts/conf.d
+    mkdir -p $dst
+    # fonts.conf
+    ln -s ${fixedConf} $dst/../fonts.conf
+
+    # fontconfig default config files
+    ln -s ${fontconfig.out}/etc/fonts/conf.d/*.conf \
+          $dst/
+
+    # 00-nixos-cache.conf
+    ln -s ${cacheConf}  $dst/00-nixos-cache.conf
+
+    # 52-nixos-default-fonts.conf
+    ln -s ${defaultFontsConf} $dst/52-nixos-default-fonts.conf
+  '';
+
 in stdenv.mkDerivation {
   name = "plot";
-  buildInputs = [ customR jq ];
+  buildInputs = [ customR jq fontconfig glibcLocales ];
   preferLocalBuild = true;
   dontPatchShebangs = true;
   phases = [ "installPhase" ];
 
   installPhase = ''
-    export FONTCONFIG_PATH=${fontconfig.out}/etc/fonts
+    export FONTCONFIG_PATH=${fontConfPath}/etc/fonts/
+    export LANG=en_US.UTF-8
+
     mkdir -p $out
     cd $out
     dataset="${dataset}"