pytest.ini pythonpath doesn't work with local early-loaded (-p) plugin #11118
Description
I am using pytest 7.2.1 on NixOS 23.05 and want to early-load a plugin, so I can do some custom command line parsing using pytest_load_initial_conftests. Here's my setup:
>conftest.py echo 'pytest_plugins = [ "my_plugin" ]' >my_plugin.py echo 'print("Plugin loaded")' >pytest.ini echo '[pytest]' >>pytest.ini echo 'pythonpath = .' Normal non-early loading of plugin works:
$ pytest -q no tests ran in 0.00s Plugin loaded Early-loading plugin with manual PYTHONPATH override also works:
$ PYTHONPATH="$PYTHONPATH:." pytest -p my_plugin -q Plugin loaded no tests ran in 0.00s But relying on pytest.ini pythonpath for early-loading fails:
$ pytest -p my_plugin Traceback (most recent call last): File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 774, in import_plugin __import__(importspec) ModuleNotFoundError: No module named 'my_plugin' The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/bin/.pytest-wrapped", line 9, in <module> sys.exit(console_main()) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 190, in console_main code = main() File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 148, in main config = _prepareconfig(args, plugins) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 329, in _prepareconfig config = pluginmanager.hook.pytest_cmdline_parse( File "/nix/store/r5wq2w8xy457h1bwx3fyb8lvlaim3gkx-python3.10-pluggy-1.0.0/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__ return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult) File "/nix/store/r5wq2w8xy457h1bwx3fyb8lvlaim3gkx-python3.10-pluggy-1.0.0/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec return self._inner_hookexec(hook_name, methods, kwargs, firstresult) File "/nix/store/r5wq2w8xy457h1bwx3fyb8lvlaim3gkx-python3.10-pluggy-1.0.0/lib/python3.10/site-packages/pluggy/_callers.py", line 55, in _multicall gen.send(outcome) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/helpconfig.py", line 103, in pytest_cmdline_parse config: Config = outcome.get_result() File "/nix/store/r5wq2w8xy457h1bwx3fyb8lvlaim3gkx-python3.10-pluggy-1.0.0/lib/python3.10/site-packages/pluggy/_result.py", line 60, in get_result raise ex[1].with_traceback(ex[2]) File "/nix/store/r5wq2w8xy457h1bwx3fyb8lvlaim3gkx-python3.10-pluggy-1.0.0/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall res = hook_impl.function(*args) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1058, in pytest_cmdline_parse self.parse(args) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1346, in parse self._preparse(args, addopts=addopts) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1225, in _preparse self.pluginmanager.consider_preparse(args, exclude_only=False) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 702, in consider_preparse self.consider_pluginarg(parg) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 728, in consider_pluginarg self.import_plugin(arg, consider_entry_points=True) File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 776, in import_plugin raise ImportError( File "/nix/store/apjpa7zk1p61ri44n1a4mykdyqpbdvw1-python3.10-pytest-7.2.1/lib/python3.10/site-packages/_pytest/config/__init__.py", line 774, in import_plugin __import__(importspec) ImportError: Error importing plugin "my_plugin": No module named 'my_plugin' I haven't seen anything in the docs to indicate that pythonpath is not applicable to -p. If that's intended behavior, it would be nice to amend the docs to reflect that. Also, I am curious if there's another way to get pytest -p my_plugin to just work? I'd like to add -p my_plugin to my pytest.ini eventually, so users just need to type in pytest and not have to worry about paths.