Added derivation for ttf2psf

pkgs/default.nix

@@ -6,6 +6,7 @@ let
   overlay = final: prev: {
     dina-vector = prev.callPackage ./fonts/dina-vector.nix { };
     dina-psf = prev.callPackage ./fonts/dina-psf.nix { };
+    ttf2psf = prev.callPackage ./fonts/ttf2psf.nix { };
     wqy-zenhei = prev.callPackage ./fonts/wqy-zenhei.nix { };
     wqy-microhei = prev.callPackage ./fonts/wqy-microhei.nix { };
     wqy-bitmapsong = prev.callPackage ./fonts/wqy-bitmapsong.nix { };

pkgs/fonts/ttf2psf.nix

@@ -0,0 +1,32 @@
+{
+  pkgs,
+  ...
+}:
+
+pkgs.stdenv.mkDerivation {
+  pname = "ttf2psf";
+  version = "1.0.0";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "NateChoe1";
+    repo = "ttf2psf";
+    rev = "8db09d05385f595c320eccae4c48ff4393ca5bde";
+    sha256 = "A";
+  };
+
+  unpackPhase = ''
+    true
+  '';
+
+  buildInputs = with pkgs; [
+    tree
+  ];
+
+  buildPhase = ''
+    tree > tree.txt
+  '';
+
+  installPhase = ''
+    install -Dm644 -t $out/debug tree.txt
+  '';
+}