anchor.diff:    version = "20140530";
   
     src = [ arcanist libphutil ];
  -  buildInputs = [ php ];
  +  buildInputs = [ php makeWrapper ];
   
     unpackPhase = "true";
     buildPhase = "true";
  
positive.code: { stdenv, fetchgit, php }:
  
  let
    libphutil = fetchgit {
  
negative.code:     cp -R ${arcanist}  $out/libexec/arcanist
  
      ln -s $out/libexec/arcanist/bin/arc $out/bin
  
      wrapProgram $out/bin/arc \
        --prefix PATH : "${php}/bin"
    '';
  
    meta = {
  