made to help a fellow named hseg in regards issues asked in #14113

Before each run: set PYTHONPATH=.

-p does no hook validation pytest --disable-plugin-autoload -p plugins.dead_plugin -q

-p can succeed but load a dead plugin pytest --disable-plugin-autoload -p plugins.dead_plugin -s

entrypoint submodules are not auto-resolved pytest --disable-plugin-autoload -p plugins -q

Now load the submodule explicitly: pytest --disable-plugin-autoload -p plugins.live_plugin -s

top-level package imports are accepted silently pytest --disable-plugin-autoload -p plugins -s

Module import path (always works as expected) PYTHONPATH=. PYTEST_PLUGINS=plugins.live_plugin pytest -s

Summary (what this proves)

-p does no hook validation |dead_plugin loads silently -p can load dead plugins |no hooks, no warning entrypoint submodules not auto-resolved |-p plugins vs -p plugins.live_plugin top-level imports accepted silently |-p plugins succeeds