mpv: Install all anime4k shaders

packages/anime4k/default.nix

@@ -0,0 +1,23 @@
+{ stdenv, lib }:
+
+stdenv.mkDerivation rec {
+  pname = "Anime4k";
+  version = "4.0.0-RC";
+
+  src = builtins.fetchGit {
+    url = "https://github.com/bloc97/Anime4K.git";
+    ref = "cb56502ed429a5a3e48ed62c5245d6445a209c7c";
+  };
+
+  installPhase = ''
+    find ./glsl/ -type f -iname '*.glsl' -exec install -Dm 644 {} -t $out/usr/share/shaders/ \;
+  '';
+  
+  meta = with lib; {
+    description = "A High-Quality Real Time Upscaler for Anime Video ";
+    homepage = "A High-Quality Real Time Upscaler for Anime Video ";
+    license = licenses.mit;
+    maintainers = [ ];
+    platforms = platforms.linux;
+  };
+}