anchor.diff:  }:
   
   stdenv.mkDerivation rec {
  -
     pname = "kid3";
  -  version = "3.8.3";
  +  version = "3.8.4";
   
     src = fetchurl {
       url = "mirror://sourceforge/project/kid3/kid3/${version}/${pname}-${version}.tar.gz";
  -    sha256 = "0i0c4bmsm36jj1v535kil47ig0ig70ykrzcw2f56spr25xns06ka";
  +    sha256 = "sha256-WYuEOqMu2VMOv6mkVCRXnmInFER/DWfPNqYuaTJ3vAc=";
     };
   
     nativeBuildInputs = [ wrapQtAppsHook ];
  -  buildInputs = with stdenv.lib;
  -  [ pkgconfig cmake python ffmpeg_3 phonon automoc4
  +  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 ];
  
positive.code: { stdenv, fetchurl
  , pkgconfig, cmake, python, ffmpeg_3, phonon, automoc4
  , chromaprint, docbook_xml_dtd_45, docbook_xsl, libxslt
  , id3lib, taglib, mp4v2, flac, libogg, libvorbis
  , zlib, readline , qtbase, qttools, qtmultimedia, qtquickcontrols
  
negative.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;
  