{ stdenv, fetchFromGitLab, lib, python3Packages, mutagen, fold-to-ascii, pyyaml, ffmpeg, r128gain }:
python3Packages.buildPythonApplication rec {
  pname = "musicutil";
  version = "latest";
  rev = "9880c175a679bf4450745dc91fb18fb88e0a4fd6";

  src = fetchFromGitLab {
    owner = "ChaotiCryptidz";
    repo = "musicutil";
    inherit rev;
    sha256 = "sha256-pvDxVeCNZy3TKfbFds4QSQPR2lYZR+RZrwBHI+Pfj+w=";
    #sha256 = lib.fakeSha256;
  };

  postPatch = ''
    substituteInPlace musicutil/meta.py --replace 'ffmpeg_path = "ffmpeg"' 'ffmpeg_path = "${ffmpeg}/bin/ffmpeg"'
    substituteInPlace musicutil/meta.py --replace 'ffprobe_path = "ffprobe"' 'ffprobe_path = "${ffmpeg}/bin/ffprobe"'
    substituteInPlace musicutil/meta.py --replace 'r128gain_path = "r128gain"' 'r128gain_path = "${r128gain}/bin/r128gain"'
  '';

  doCheck = false;

  propagatedBuildInputs = [ mutagen fold-to-ascii pyyaml ];
}