anchor.diff: -{ lib, stdenv
  -, fetchFromGitHub
  -}:
  +{ lib, gccStdenv, fetchFromGitHub }:
   
  -stdenv.mkDerivation rec {
  +gccStdenv.mkDerivation rec {
     pname = "cc65";
     version = "2.19";
   
  
positive.code:     sha256 = "01a15yvs455qp20hri2pbg2wqvcip0d50kb7dibi9427hqk9cnj4";
    };
  
    makeFlags = [
      "PREFIX=${placeholder "out"}"
      "CC=${stdenv.cc.targetPrefix}cc"
    ];
  
    meta = with lib; {
      homepage = "https://cc65.github.io/";
  
negative.code:     '';
      license = licenses.zlib;
      maintainers = with maintainers; [ AndersonTorres ];
      platforms = platforms.unix;
    };
  }
  