python3Packages.dbf: fix build on Darwin (#298070)

diff --git a/dbf/test.py b/dbf/test.py

index 117f611..34a9507 100755

--- a/dbf/test.py

+++ b/dbf/test.py

@@ -4814,6 +4814,7 @@ def test_index_search(self):

         self.assertEqual(sorted.index_search('jul', partial=True), 9)

         self.assertTrue(sorted.index_search('jul', partial=True))

+    @unittest.skipIf(sys.platform == 'darwin', 'fails on case-insensitive filesystems')

     def test_mismatched_extensions(self):

         old_memo_name = self.dbf_table._meta.memoname

         new_memo_name = old_memo_name[:-3] + 'Dbt'

    hash = "sha256-MFEi1U0RNvrfDtV4HpvPgKTCibAh76z7Gnmj32IubYw=";

  };

  # Workaround for https://github.com/ethanfurman/dbf/issues/48

  patches = lib.optional python.stdenv.isDarwin ./darwin.patch;

  propagatedBuildInputs = [ aenum ];

  checkPhase = ''

    runHook preCheck

    ${python.interpreter} -m dbf.test

    runHook postCheck

  '';

  pythonImportsCheck = [ "dbf" ];