anchor.diff:    propagatedBuildInputs = with python3.pkgs; [
       cython
       llfuse
  +    msgpack
       packaging
     ] ++ lib.optionals (!stdenv.isDarwin) [
       pyfuse3
  
positive.code:     "test_fuse_mount_hardlinks"
      "test_fuse_mount_options"
      "test_fuse_versions_view"
      "test_readonly_mount"
      # Error: Permission denied while trying to write to /var/{,tmp}
      "test_get_cache_dir"
  
negative.code: 
  python3.pkgs.buildPythonApplication rec {
    pname = "borgbackup";
    version = "1.2.0";
  
    src = python3.pkgs.fetchPypi {
      inherit pname version;
      sha256 = "sha256-45pVR5Au9FYQGqTHefpms0W9pw0WeI6L0Y5Fj5Ovf2c=";
    };
  
    postPatch = ''
  