anchor.diff:      pkgname = "glibc";
       patchelf = ./patchelf-static/patchelf;
       extra3 = findutils;
  +    extra4 = gnused;
       postprocess = ./scripts/add-symlink.sh;
       extra = linuxHeaders;
       extra2 = coreutils;
  
positive.code:     cp = ./tools/cp;
      system = "i686-linux";
      args = [ ./scripts/download-script ];
      inherit postprocess extra extra2 extra3 patchelf;
    };
  
  /*
  
negative.code:     args = [ ./scripts/curl-unpack ];
    };
  
    download = {url, pkgname, postprocess ? null, extra ? null, extra2 ? null, extra3 ? null, extra4? null, patchelf ? null}: derivation {
      name = pkgname;
      builder = ./bash-static/bash;
      tar = ./gnutar-static/bin/tar;
  