anchor.diff:    hardeningDisable = [ "format" ];
   
     configureFlags = [
  -    "GMP_CFLAGS=-I${gmp.dev}/include"
  +    "GMP_CFLAGS=-I${lib.getDev gmp}/include"
       "GMP_LDFLAGS=-L${gmp.out}/lib"
     ];
   
  
positive.code: 
    enableParallelBuilding = true;
  
    meta = {
      description = "ANSI Common Lisp Implementation";
      homepage = "https://common-lisp.net/project/mkcl/";
      license = licenses.lgpl2Plus;
  
negative.code: { lib, stdenv, fetchFromGitHub, fetchpatch, makeWrapper, gmp, gcc }:
  
  stdenv.mkDerivation rec {
    pname = "mkcl";
    version = "1.1.11";
  
  