I'm getting ready to publish my first plugin. I've decided to put it in mu-plugin, because if you removed it, it would break other code dependent on it. (It's a developer tool for logging variables to a text file.)
So, do can I submit this to wp.o? Or do they only accept plugins that go into the plugins directory?
No, mu-plugins cannot be updated from wordpress.org. When you submit a plugin to that repository, it will be available as a regular plugin only. You can ask your users to isntall it as a mu-plugin, but they will not receive updates then.
The “other code” should be written in a way that it doesn’t do anything when your plugin is disabled. This is much better than using the mu-plugins directory.
