anchor.diff:        owner  = "iovisor";
         repo   = "bcc";
         rev    = "v${version}";
  -      sha256 = "0qbqygj7ia494fbira9ajavvnxlpffx1jlzbb1vsf1wa8h3y4xn1";
  +      sha256 = "1v2gzdd4k58f3yxmq4z97a7xh5vyd84flzzfr9k2cm29i93cwcam";
         name   = "bcc";
       })
   
  
positive.code:     (fetchFromGitHub {
        owner  = "libbpf";
        repo   = "libbpf";
        rev    = "0e37e0d03ac99987401e4496d3d76d44237b9963";
        sha256 = "0wjf9dhvqkwiwnygzikamrgmpxgq77h2pxx6mi4pnbw0lxlppivr";
        name   = "libbpf";
      })
    ];
  
negative.code: }:
  
  python.pkgs.buildPythonApplication rec {
    version = "0.11.0";
    name = "bcc-${version}";
  
    srcs = [
  