all: embrace unit packages where possible

pkgs/unit/yt/ytarchive/package.nix

@@ -0,0 +1,37 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+
+, python3
+, ffmpeg
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ytarchive";
+  version = "0.2.2";
+
+  src = fetchFromGitHub {
+    owner = "Kethsar";
+    repo = "ytarchive";
+    rev = "v${version}";
+    sha256 = "xT45FF0ztWQXzQgYztl2YKiI2iGJfnCXgCMw8gOmxzM=";
+  };
+
+  propagatedBuildInputs = [
+    python3
+    ffmpeg
+  ];
+
+  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
+
+  installPhase = ''
+    install -Dm00755 ytarchive.py $out/bin/ytarchive
+  '';
+
+  meta = with lib; {
+    description = "Garbage Youtube livestream downloader";
+    homepage = "https://github.com/Kethsar/ytarchive";
+    license = licenses.mit;
+    platforms = python3.meta.platforms;
+  };
+}