anchor.diff:        #
         # For now, fix this by 1) pinning the llvm version; 2) manually setting LLVM_VERSION
         # to something the makefile will recognize.
  -      sed '52iLLVM_VERSION=3.8.0' -i compiler/Makefile.unix
  +      sed '52iLLVM_VERSION=${stdenv.lib.getVersion llvm}' -i compiler/Makefile.unix
       '';
   
       # Remove most faust2appl scripts since they won't run properly
  
positive.code: 
  let
  
    version = "2.0.a51";
  
    src = fetchurl {
      url = "mirror://sourceforge/project/faudiostream/faust-${version}.tgz";
      sha256 = "1yryjqfqmxs7lxy95hjgmrncvl9kig3rcsmg0v49ghzz7vs7haxf";
    };
  
    meta = with stdenv.lib; {
  
negative.code:         # export parts of the build environment
          for script in "$out"/bin/*; do
            wrapProgram "$script" \
              --set FAUSTLIB "${faust}/share/faust" \
              --set FAUST_LIB_PATH "${faust}/share/faust" \
              --set FAUSTINC "${faust}/include/faust" \
              --prefix PATH : "$PATH" \
              --prefix PKG_CONFIG_PATH : "$PKG_CONFIG_PATH" \
  