anchor.diff:      rev = "v${version}";
       owner = "ostreedev";
       repo = "ostree";
  -    sha256 = "0kk04pznk6m6fqdz609m2zcnkalcw9q8fsx8wm42k6dhf6cw7l3g";
  +    sha256 = "0i7b7hvlv8m44k39fr5389wskf810vda8s7ivy2whj1nan5951yx";
     };
   
     patches = [
  
positive.code: }:
  
  let
    version = "2018.6";
  
    libglnx-src = fetchFromGitHub {
      owner = "GNOME";
      repo = "libglnx";
      rev = "e1a78cf2f5351d5394ccfb79f3f5a7b4917f73f3";
      sha256 = "10kzyjbrmr98i65hlz8jc1v5bijyqwwfp6qqjbd5g3y0n520iaxc";
    };
  
    bsdiff-src = fetchFromGitHub {
  
negative.code:     env NOCONFIGURE=1 ./autogen.sh
    '';
  
    enableParallelBuilding = true;
  
    configureFlags = [
      "--with-systemdsystemunitdir=$(out)/lib/systemd/system"
      "--with-systemdsystemgeneratordir=$(out)/lib/systemd/system-generators"
  