anchor.diff:  
   in buildPythonPackage rec {
     name = "beets-${version}";
  -  version = "1.3.15";
  +  version = "1.3.16";
     namePrefix = "";
   
     src = fetchFromGitHub {
       owner = "sampsyo";
       repo = "beets";
       rev = "v${version}";
  -    sha256 = "17mbkilqqkxxa8ra8b4zlsax712jb0nfkvcx9iyq9303rqwv5sx2";
  +    sha256 = "1grjcgr419yq756wwxjpzyfjdf8n51bg6i0agm465lb7l3jgqy6k";
     };
   
     propagatedBuildInputs = [
  
positive.code:     description = "Music tagger and library organizer";
      homepage = http://beets.radbox.org;
      license = licenses.mit;
      maintainers = with maintainers; [ aszlig iElectric pjones ];
      platforms = platforms.linux;
    };
  }
  
negative.code:   };
  
    pluginsWithoutDeps = [
      "bench" "bpd" "bpm" "bucket" "convert" "cue" "duplicates" "edit" "embedart"
      "filefilter" "freedesktop" "fromfilename" "ftintitle" "fuzzy" "ihate"
      "importadded" "importfeeds" "info" "inline" "ipfs" "keyfinder" "lyrics"
      "mbcollection" "mbsubmit" "mbsync" "metasync" "missing" "permissions" "play"
      "plexupdate" "random" "rewrite" "scrub" "smartplaylist" "spotify" "the"
      "types" "zero"
    ];
  