anchor.diff:    ];
   
     postPatch = ''
  -    patchShebangs waf
  +    patchShebangs ./waf
     '';
   
     configureFlags = [
  
positive.code:     gtkmm_2
      jack2_lib
      ladspaH
      librdf
      librsvg
      libsndfile
      lilv
  
negative.code:     "--no-faust"
    ] ++ optional optimizationSupport "--optimization";
  
    configurePhase = ''
      ./waf configure --prefix=$out $configureFlags
    '';
  
    NIX_CFLAGS_COMPILE = [
      "-I${eigen}/include/eigen3"
    ];
  
    buildPhase = ''
      ./waf build
  