anchor.diff:  
       src = fetchurl {
         url = "https://www.antlr.org/download/antlr-${version}-complete.jar";
  -      sha256 = "1k9pw5gv2zhh06n1vys76kchlz4mz0vgv3iiba8w47b9fqa7n4dv";
  +      sha256 = "0dnz2x54kigc58bxnynjhmr5iq49f938vj6p50gdir1xdna41kdg";
       };
   
       dontUnpack = true;
  
positive.code: , fetchpatch, fetchFromGitHub, cmake, ninja, pkg-config, libuuid, utf8cpp, darwin }:
  
  let
    version = "4.9.2";
    source = fetchFromGitHub {
      owner = "antlr";
      repo = "antlr4";
      rev = version;
      sha256 = "0rpqgl2y22iiyg42y8jyiy2g7x421yf0q16cf17j76iai6y0bm5p";
    };
  
    runtime = {
  
negative.code:       src = source;
  
        outputs = [ "out" "dev" "doc" ];
  
        patchFlags = [ "-p3" ];
  
  