anchor.diff:    };
   
     patches = [
  -    # Fix ninja parsing
  -    (fetchpatch {
  -      url = "https://github.com/gdraheim/zziplib/commit/75e22f3c365b62acbad8d8645d5404242800dfba.patch";
  -      sha256 = "IB0am3K0x4+Ug1CKvowTtkS8JD6zHJJ247A7guJOw80=";
  -    })
  -
       # Install man pages
       (fetchpatch {
         url = "https://github.com/gdraheim/zziplib/commit/5583ccc7a247ee27556ede344e93d3ac1dc72e9b.patch";
  
positive.code: 
    checkInputs = [
      unzip
    ];
  
    cmakeFlags = [
      "-DCMAKE_SKIP_BUILD_RPATH=OFF" # for tests
    ];
  
    # tests are broken (https://github.com/gdraheim/zziplib/issues/20),
  
negative.code: { stdenv
  , perl
  , pkg-config
  , fetchFromGitHub
  , fetchpatch
  , zip
  