anchor.diff:        test/test_replaygain.py
     '';
   
  -  doCheck = true;
  +  doCheck = false; # TODO, see https://github.com/beetbox/beets/issues/1876#issuecomment-182010438
   
     preCheck = ''
       (${concatMapStrings (s: "echo \"${s}\";") allPlugins}) \
  
positive.code: 
  in buildPythonPackage rec {
    name = "beets-${version}";
    version = "1.3.16";
    namePrefix = "";
  
    src = fetchFromGitHub {
      owner = "sampsyo";
      repo = "beets";
      rev = "v${version}";
      sha256 = "1grjcgr419yq756wwxjpzyfjdf8n51bg6i0agm465lb7l3jgqy6k";
    };
  
    propagatedBuildInputs = [
  
negative.code: 
  let
    optionalPlugins = {
      acousticbrainz = enableAcousticbrainz;
      badfiles = enableBadfiles;
      chroma = enableAcoustid;
      discogs = enableDiscogs;
  