Add custom package support

pkgs/default.nix

@@ -0,0 +1,8 @@
+{ lib, pkgs }:
+let
+  inherit (pkgs) callPackage;
+in
+{
+  # yeah turns out this is in nixpkgs now... we'll leave it as a sample i guess lol
+  monocraft' = callPackage ./monocraft.nix { };
+}

pkgs/monocraft.nix

@@ -0,0 +1,25 @@
+{ lib, fetchFromGitHub }:
+fetchFromGitHub rec {
+  pname = "monocraft";
+  version = "1.4";
+
+  owner = "IdreesInc";
+  repo = pname;
+  rev = "v${version}";
+
+  postFetch = ''
+    install -Dm444 -t $out/share/fonts/opentype/ $out/Monocraft.otf
+    shopt -s extglob dotglob
+    rm -rf $out/!(share)
+    shopt -u extglob dotglob
+  '';
+  hash = "sha256-e/kLeYK9//iw+8XOfC0bocldhFGojGApT/EtNtdf4tc=";
+
+  meta = with lib; {
+    description = "A programming font based on the typeface used in Minecraft";
+    homepage = "https://github.com/${owner}/${repo}";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = [ maintainers.devplayer0 ];
+  };
+}