refactor(sys): Modularize and move to `modules/system` or `pkgs`

2 files changed, 77 insertions, 0 deletions

diff --git a/modules/system/fonts/default.nix b/modules/system/fonts/default.nix
new file mode 100644
index 00000000..fa99c1f3
--- /dev/null
+++ b/modules/system/fonts/default.nix
@@ -0,0 +1,55 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.soispha.fonts;
+in {
+  options.soispha.fonts = {
+    enable = lib.mkEnableOption "fonts";
+
+    fonts = lib.mkOption {
+      type = lib.types.listOf lib.types.path;
+      example = lib.literalExpression ''["SourceCodePro" "Overpass" "FiraCode"]'';
+      default = [
+        "SourceCodePro"
+        "Overpass"
+      ];
+      description = "The nerd-fonts to install";
+    };
+
+    enableEmoji = lib.mkEnableOpiton "emoji font support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    fonts = {
+      packages = let
+        nerdFont = pkgs.nerdfonts.override {
+          inherit (cfg) fonts;
+        };
+      in
+        [
+          nerdFont
+        ]
+        ++ (with pkgs; [liberation_ttf])
+        ++ lib.optional cfg.enableEmoji pkgs.noto-fonts-emoji;
+
+      fontconfig = {
+        # NOTE: This is responsible for color emoji support <2023-08-28>
+        # WARNING: This could lead to broken font rendering, if the emoji font is used as
+        # a fallback for normal characters <2024-05-16>
+        localConf = lib.mkIf cfg.enableEmoji (builtins.readFile ./emoji_font.xml);
+
+        defaultFonts = {
+          serif = lib.mkForce ["Liberation Serif"] ++ lib.optional cfg.enableEmoji "Noto Color Emoji";
+          sansSerif = lib.mkForce ["Overpass Nerd Font Propo"] ++ lib.optional cfg.enableEmoji "Noto Color Emoji";
+          monospace = lib.mkForce ["SauceCodePro Nerd Font Mono"] ++ lib.optional cfg.enableEmoji "Noto Color Emoji";
+          emoji = lib.mkIf cfg.enableEmoji (lib.mkForce ["Noto Color Emoji"]);
+        };
+        allowType1 = false;
+        allowBitmaps = false;
+      };
+    };
+  };
+}
diff --git a/modules/system/fonts/emoji_font.xml b/modules/system/fonts/emoji_font.xml
new file mode 100644
index 00000000..f3f6bb3e
--- /dev/null
+++ b/modules/system/fonts/emoji_font.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0"?>
+<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+<fontconfig>
+  <alias binding="weak">
+    <family>monospace</family>
+    <prefer>
+      <family>emoji</family>
+    </prefer>
+  </alias>
+  <alias binding="weak">
+    <family>sans-serif</family>
+    <prefer>
+      <family>emoji</family>
+    </prefer>
+  </alias>
+  <alias binding="weak">
+    <family>serif</family>
+    <prefer>
+      <family>emoji</family>
+    </prefer>
+  </alias>
+</fontconfig>