anchor.diff:  
     enableParallelBuilding = true;
   
  -  postInstall = ''
  -    cd ..
  -    install -Dm644 {ui/images,$out/share/pixmaps}/fmit.svg
  -  '';
  -
     meta = with stdenv.lib; {
       inherit version;
       description = "Free Musical Instrument Tuner";
  
positive.code: 
    postPatch = ''
      substituteInPlace fmit.pro --replace '$$FMITVERSIONGITPRO' '${version}'
      substituteInPlace distrib/fmit.desktop \
        --replace "Icon=fmit" "Icon=$out/share/pixmaps/fmit.svg"
    '';
  
    configurePhase = ''
  
negative.code: assert alsaSupport -> alsaLib != null;
  assert jackSupport -> libjack2 != null;
  
  let version = "1.0.7"; in
  stdenv.mkDerivation {
    name = "fmit-${version}";
  
    src = fetchFromGitHub {
      sha256 = "14dzrrxjskhqamhfqhzp6napvc1vyjxcc0v8id1iqzsfdn86xqm9";
      rev = "v${version}";
      repo = "fmit";
      owner = "gillesdegottex";
  