anchor.diff:  { stdenv, fetchurl
  -, pkgconfig, cmake, python, ffmpeg_3, phonon, automoc4
  +, pkgconfig, cmake, python3, ffmpeg_3, phonon, automoc4
   , chromaprint, docbook_xml_dtd_45, docbook_xsl, libxslt
   , id3lib, taglib, mp4v2, flac, libogg, libvorbis
   , zlib, readline , qtbase, qttools, qtmultimedia, qtquickcontrols
  
positive.code:   meta = with stdenv.lib; {
      description = "A simple and powerful audio tag editor";
      longDescription = ''
        If you want to easily tag multiple MP3, Ogg/Vorbis, FLAC, MPC,
        MP4/AAC, MP2, Opus, Speex, TrueAudio, WavPack, WMA, WAV and AIFF
        files (e.g. full albums) without typing the same information
        again and again and have control over both ID3v1 and ID3v2 tags,
        then Kid3 is the program you are looking for.
  
        With Kid3 you can:
        - Edit ID3v1.1 tags;
        - Edit all ID3v2.3 and ID3v2.4 frames;
        - Convert between ID3v1.1, ID3v2.3 and ID3v2.4 tags
        - Edit tags in MP3, Ogg/Vorbis, FLAC, MPC, MP4/AAC, MP2, Opus,
          Speex, TrueAudio, WavPack, WMA, WAV, AIFF files and tracker
          modules (MOD, S3M, IT, XM);
        -  Edit tags of multiple files, e.g. the artist, album, year and
           genre of all files of an album typically have the same values
           and can be set together;
        - Generate tags from filenames;
        - Generate tags from the contents of tag fields;
        - Generate filenames from tags;
        - Rename and create directories from tags;
        - Generate playlist files;
        - Automatically convert upper and lower case and replace strings;
        - Import from gnudb.org, TrackType.org, MusicBrainz, Discogs,
          Amazon and other sources of album data;
        - Export tags as CSV, HTML, playlists, Kover XML and in other
          formats;
        - Edit synchronized lyrics and event timing codes, import and
          export LRC files
      '';
      homepage = "http://kid3.sourceforge.net/";
      license = licenses.lgpl2Plus;
  
negative.code: }:
  
  stdenv.mkDerivation rec {
    pname = "kid3";
    version = "3.8.4";
  
    src = fetchurl {
      url = "mirror://sourceforge/project/kid3/kid3/${version}/${pname}-${version}.tar.gz";
      sha256 = "sha256-WYuEOqMu2VMOv6mkVCRXnmInFER/DWfPNqYuaTJ3vAc=";
    };
  
    nativeBuildInputs = [ wrapQtAppsHook ];
    buildInputs = [
      pkgconfig cmake python3 ffmpeg_3 phonon automoc4
      chromaprint docbook_xml_dtd_45 docbook_xsl libxslt
      id3lib taglib mp4v2 flac libogg libvorbis zlib readline
      qtbase qttools qtmultimedia qtquickcontrols ];
  