anchor.diff: -{ stdenv, fetchurl
  +{ stdenv
  +, fetchgit
  +, fetchurl
   , gettext
   , intltool
   , makeWrapper
  -, pkgconfig
   , python
   
  +, atkmm
   , avahi
   , bluez
   , boost
   , eigen
   , fftw
  +, gdk-pixbuf
   , glib
   , glibmm
   , gtk2
  
positive.code:     libsndfile
      lilv
      lv2
      serd
      sord
      sratom
      webkitgtk_2_4_gtk2
      zita-convolver
      zita-resampler
    ];
  
    configureFlags = [
      "--nocache"
  
negative.code: , libsndfile
  , lilv
  , lv2
  , pangomm
  , qjackctl
  , serd
  , sord
  , sratom
  , zita-convolver
  , zita-resampler
  
  # Enable support for native CPU extensions
  , optimizationSupport ? false
  }:
  
  with {
    inherit (stdenv.lib)
      optional;
  };
  
  stdenv.mkDerivation rec {
    name = "guitarix-${version}";
    #version = "0.34.0";
    version = "2016-02-14";
  
    /*src = fetchurl {
      url = "mirror://sourceforge/guitarix/guitarix2-${version}.tar.bz2";
      sha256 = "0pamaq8iybsaglq6y1m1rlmz4wgbs2r6m24bj7x4fwg4grjvzjl8";
    };*/
    # Support for disabling webkitgtk will be in the 0.35.0 release
    src = fetchgit {
      url = "http://git.code.sf.net/p/guitarix/git";
      rev = "4682d8ca6d9c76d3b1bc8da489ded7d043d27d65";
      sha256 = "0j3x64llfy51szmysn83fgs79qj8sz20rgiq59kwc1qm081z1hvm";
    };
  
    nativeBuildInputs = [
      gettext
      intltool
      makeWrapper
      python
    ];
  
    buildInputs = [
      atkmm
      avahi
      #bluez
      boost
      gdk-pixbuf
      eigen
      fftw
      glib
  