Add gpg-agent <!nocheck> in Build-Deps
In Debian, this package is pulled by other dependencies, but when it's not the case some tests are failing:
=========================== short test summary info ============================
FAILED tests/test_CLI.py::TestCLI::test_clearsign - gpg.errors.GPGMEError: gp...
FAILED tests/test_CLI.py::TestCLI::test_fingerprint_without_signature - Asser...
FAILED tests/test_CLI.py::TestCLI::test_unknown_signer - AssertionError: asse...
FAILED tests/test_CLI.py::TestCLI::test_valid_signature - AssertionError: ass...
FAILED tests/test_CLI.py::TestCLI::test_valid_signature_fingerprint - Asserti...
FAILED tests/test_CLI.py::TestCLI::test_valid_signature_fingerprint_keyring
FAILED tests/test_CLI.py::TestCLI::test_wrong_signature - AssertionError: ass...
FAILED tests/test_CLI.py::TestCLI::test_wrong_signature_unknown_signer - Asse...
complaining about:
E gpg.errors.GPGMEError: gpgme_op_createkey: GnuPG: No agent running