anchor.diff:    '';
   
     meta = {
  -    description = "Creates MIDI tracks for a soloist to perform over from a user supplied file containing chords";
  -    homepage =  "https://www.mellowood.ca/mma/index.html";
  +    description =
  +      "Creates MIDI tracks for a soloist to perform over from a user supplied file containing chords";
  +    homepage = "https://www.mellowood.ca/mma/index.html";
       license = lib.licenses.gpl2;
       maintainers = [ lib.maintainers.magnetophon ];
       platforms = lib.platforms.linux;
  
positive.code: { lib, stdenv, fetchurl, makeWrapper, python3, alsa-utils, timidity }:
  
    stdenv.mkDerivation rec {
    version = "20.12";
    pname = "mma";
  
    src = fetchurl {
      url = "https://www.mellowood.ca/mma/mma-bin-${version}.tar.gz";
      sha256 = "18k0hwlqky5x4y461fxmw77gvz7z8jyrvxicrqphsgvwwinzy732";
    };
  
    nativeBuildInputs = [ makeWrapper ];
  
negative.code:     cp util/mup2mma.py $out/bin/mup2mma
      cp util/pg2mma.py $out/bin/pg2mma
      cp util/synthsplit.py $out/bin/mma-synthsplit
      cp -r {docs,egs,includes,lib,MMA,text,plugins} $out/share/mma
  
      cp util/README.* $out/share/mma/docs
      mv $out/share/mma/docs/man/mma-libdoc.8 $out/share/man/man8
  