default.nix

  { stdenv, fetchurl, python, pythonPackages}:

  stdenv.mkDerivation rec {
  version = "15.12";
  name = "mma-${version}";

  src = fetchurl {
    url = "http://www.mellowood.ca/mma/mma-bin-15.12.tar.gz";
    sha256 = "0k37kcrfaxmwjb8xb1cbqinrkx3g50dbvwqbvwl3l762j4vr8jgx";
  };

  buildInputs = [ python pythonPackages.wrapPython ];

  installPhase= ''
    mkdir -p $out/{bin,share/mma,share/man/man1,share/man/man8}

    # sed  -i -e 's|MMAdir = d|MMAdir = "$out/MMA"; sys.path.insert(0, MMAdir)|' mma.py
    cp mma.py $out/bin/mma
    cp mma-gb $out/bin/mma-gb
    cp mma-libdoc $out/bin/mma-libdoc
    cp mma-renum $out/bin/mma-renum
    cp mma-splitrec $out/bin/mma-splitrec
    cp util/mma-mnx.py $out/bin/mma-mnx
    cp util/mma-rm2std.py $out/bin/mma-rm2std
    cp util/mmatabs.py $out/bin/mmatabs
    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} $out/share/mma
    rmdir $out/share/mma/includes/aria

    cp util/README.* $out/share/mma/docs
    mv $out/share/mma/docs/man/mma-libdoc.8 $out/share/man/man8
    mv $out/share/mma/docs/man/mma-renum.1 $out/share/man/man1
    mv $out/share/mma/docs/man/mma.1 $out/share/man/man1
    mv $out/share/mma/docs/man/mma-gb.1 $out/share/man/man1
    rm -rf $out/share/mma/docs/man
    ${python.interpreter} mma.py -G
    chmod a+w $out/share/mma/lib/stdlib/.mmaDB
    wrapPythonPrograms
    for program in mma mma-*
      do
        wrapProgram $out/bin/$program \
        --set PYTHONPATH $out/share/mma:$program_PYTHONPATH
      done
  '';

    # export PYTHONPATH="$out/share/mma/lib:$PYTHONPATH"

  meta = {
    description = "Musical MIDI Accompaniment is an accompaniment generator. It creates MIDI tracks for a soloist to perform over from a user supplied file containing chords and MMA directives.";
    homepage =  http://www.mellowood.ca/mma/index.html;
    license = stdenv.lib.licenses.gpl2;
    maintainers = [ stdenv.lib.maintainers.magnetophon ];
    platforms = stdenv.lib.platforms.all;
  };
}