anchor.diff:      priority = "7";
     };
   }
  +
  +// (if gmp != null || mpfr != null then {
  +  buildInputs = []
  +    ++ (if gmp != null then [gmp] else [])
  +    ++ (if mpfr != null then [mpfr] else []);
  +} else {}))
  
positive.code: 
  with import ../../../lib;
  
  stdenv.mkDerivation {
    name = "gcc-4.1.2";
    builder = if langF77 then ./fortran.sh else  ./builder.sh;
    
  
negative.code: 
    passthru = { inherit langC langCC langF77; };
  
    meta = {
      homepage = "http://gcc.gnu.org/";
      license = "GPL/LGPL";
  