add customfonts custom package

nixos/gui-pkgs.nix

@@ -21,6 +21,7 @@ let
     libnotify
     hoppscotch
   ];
+  customfonts = pkgs.callPackage ../packages/customfonts.nix { inherit pkgs; };
 in
 {
   environment.systemPackages = lib.lists.unique (kdePackages ++ packages);
@@ -44,6 +45,7 @@ in
   programs.partition-manager.enable = true;
 
   fonts.packages = with pkgs; [
+    customfonts
     corefonts
     nerd-fonts.fira-code
   ];

packages/customfonts.nix

@@ -0,0 +1,30 @@
+{ pkgs, ... }:
+
+pkgs.stdenv.mkDerivation {
+  pname = "customfonts";
+  version = "1.0";
+
+  src = pkgs.fetchurl {
+    url = "https://www.coastalcommits.com/cswimr/fonts/archive/master.tar.gz";
+    sha256 = "sha256-XBRNu1DxjhfloJkQrFy4Wz4IUD6abhKcZKkX/snyxs4";
+  };
+
+  unpackPhase = ''
+  runHook preUnpack
+  ${pkgs.gnutar}/bin/tar xf $src
+
+  runHook postUnpack
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm644 fonts/ttf/ComicCode/*.ttf -t $out/share/fonts/truetype
+    install -Dm644 fonts/otf/ComicCode/*.otf -t $out/share/fonts/opentype
+
+    install -Dm644 fonts/ttf/ComicCodeNerdFont/*.ttf -t $out/share/fonts/truetype
+    install -Dm644 fonts/otf/ComicCodeNerdFont/*.otf -t $out/share/fonts/opentype
+
+    runHook postInstall
+  '';
+}