Plugin behaviour dependent on third-party module version?

[jstasiak]

I was looking at mypy plugin infrastructure the other day and I wondered what's the solution to the following issue (let's assume we have a third party module supermod):

• supermod version 1.1 has function superfun returning types X or Z, depending on some parameter
• supermod version 1.2 has function superfun returning types Y or W, depending on some parameter
• I'd like to have a mypy plugin that can handle both of those versions correctly

In order to do that a plugin would have to be able to inspect version of supermod installed I think... Alternatively the version could be provided in per-plugin options, like #3532 describes. What do you think about this?

[gvanrossum]

We should wait until python/typing#84 is solved and then make the package version available to plugins.

[hauntsaninja]

Closing because stale