anchor.diff: -{ stdenv, fetchurl, perl, groff, darwinSwVersUtility, cmake }:
  +{ stdenv, fetchurl, perl, groff, darwinSwVersUtility, darwinInstallNameToolUtility, cmake }:
   
   let version = "3.0"; in
   
  
positive.code:     description = "Collection of modular and reusable compiler and toolchain technologies";
      license = "BSD";
      maintainers = with stdenv.lib.maintainers; [viric shlevy];
      platforms = with stdenv.lib.platforms; linux;
    };
  }
  
  
negative.code:   };
  
    buildInputs = [ perl groff cmake ] ++
      stdenv.lib.optionals stdenv.isDarwin [ darwinSwVersUtility darwinInstallNameToolUtility ];
  
    cmakeFlags = [ "-DCMAKE_BUILD_TYPE=Release" ];
  
  