anchor.diff:      "--no-ldconfig"
       "--no-desktop-update"
       "--enable-nls"
  -    "--no-faust" # todo: find out why --faust doesn't work
  +    "--no-faust"
     ] ++ optional optimizationSupport "--optimization";
   
  +  NIX_CFLAGS_COMPILE = [
  +    #"-std=c++11"
  +    "-I${eigen}/include/eigen3"
  +  ];
  +
     configurePhase = ''
  -    python waf configure --prefix=$out $configureFlags
  -  '';
  +      ./waf configure --prefix=$out $configureFlags
  +    '';
   
     buildPhase = ''
  -    python waf build
  +    ./waf build
     '';
   
     installPhase = ''
  -    python waf install
  +    ./waf install
     '';
   
     preFixup = ''
  -    gtk3AppsWrapperArgs+=("--prefix PATH : ${qjackctl}/bin")
  +    wrapProgram $out/bin/guitarix \
  +      --prefix 'PATH' : "${qjackctl}/bin"
     '';
  -
  -  enableParallelBuilding = true;
   
     meta = with stdenv.lib; {
       description = "A virtual guitar amplifier";
       homepage = http://guitarix.sourceforge.net/;
       license = licenses.gpl3Plus;
  -    maintainers = with maintainers; [ ];
  +    maintainers = with maintainers; [
  +      codyopel
  +    ];
       platforms = with platforms;
  -      i686-linux
  -      ++ x86_64-linux;
  +      x86_64-linux;
     };
   }
  
positive.code:     libsndfile
      lilv
      lv2
      serd
      sord
      sratom
      webkitgtk_2_4_gtk2
      zita-convolver
      zita-resampler
    ];
  
    configureFlags = [
      "--nocache"
  
negative.code: { stdenv
  , fetchgit
  , fetchurl
  , gettext
  , intltool
  , makeWrapper
  , python
  
  , atkmm
  , avahi
  , bluez
  , boost
  , eigen
  , fftw
  , gdk-pixbuf
  , glib
  , glibmm
  , gtk2
  