pigar.tests.test_cmd (unittest.loader._FailedTest) ... ERROR
pigar.tests.test_core (unittest.loader._FailedTest) ... ERROR
test_db (pigar.tests.test_db.DBTests) ... ok
test_compare_version (pigar.tests.test_helpers.CompareVersionTests) ... ok
test_sort_versions (pigar.tests.test_helpers.CompareVersionTests) ... ok
test_attr_error (pigar.tests.test_helpers.DictTests) ... ok
test_getattr (pigar.tests.test_helpers.DictTests) ... ok
test_init_with_dict (pigar.tests.test_helpers.DictTests) ... ok
test_init_with_kwargs (pigar.tests.test_helpers.DictTests) ... ok
test_init_with_zip_list (pigar.tests.test_helpers.DictTests) ... ok
test_parse_requirements (pigar.tests.test_helpers.ParseReqsTest) ... ok
test_custom_headers (pigar.tests.test_helpers.PrintTableTests) ... ok
test_default_headers (pigar.tests.test_helpers.PrintTableTests) ... ok
test_extract_names (pigar.tests.test_pypi.ExtractHtmlTest) ... ok
test_tar (pigar.tests.test_unpack.TopLevelTests) ... ok
test_zip (pigar.tests.test_unpack.TopLevelTests) ... ok

======================================================================
ERROR: pigar.tests.test_cmd (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: pigar.tests.test_cmd
Traceback (most recent call last):
  File "/usr/lib/python3.10/unittest/loader.py", line 436, in _find_test_path
    module = self._get_module_from_name(name)
  File "/usr/lib/python3.10/unittest/loader.py", line 377, in _get_module_from_name
    __import__(name)
  File "/build/pigar/src/pigar-0.10.0/pigar/tests/test_cmd.py", line 8, in <module>
    from ..__main__ import parser
  File "/build/pigar/src/pigar-0.10.0/pigar/__main__.py", line 10, in <module>
    from .core import (
  File "/build/pigar/src/pigar-0.10.0/pigar/core.py", line 25, in <module>
    from .parser import parse_imports, parse_installed_packages
  File "/build/pigar/src/pigar-0.10.0/pigar/parser.py", line 16, in <module>
    import nbformat
ModuleNotFoundError: No module named 'nbformat'


======================================================================
ERROR: pigar.tests.test_core (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: pigar.tests.test_core
Traceback (most recent call last):
  File "/usr/lib/python3.10/unittest/loader.py", line 436, in _find_test_path
    module = self._get_module_from_name(name)
  File "/usr/lib/python3.10/unittest/loader.py", line 377, in _get_module_from_name
    __import__(name)
  File "/build/pigar/src/pigar-0.10.0/pigar/tests/test_core.py", line 10, in <module>
    from ..core import parse_packages, is_stdlib, _RequiredModules, _Locations
  File "/build/pigar/src/pigar-0.10.0/pigar/core.py", line 25, in <module>
    from .parser import parse_imports, parse_installed_packages
  File "/build/pigar/src/pigar-0.10.0/pigar/parser.py", line 16, in <module>
    import nbformat
ModuleNotFoundError: No module named 'nbformat'


----------------------------------------------------------------------
Ran 16 tests in 0.081s

FAILED (errors=2)
==> ERROR: A failure occurred in check().
    Aborting...