Update default poetry version to 1.2.0

[erikjohnston]

Mostly as this will make my life easier for adding in Rust, where in poetry 1.1.* you need to manually upgrade setuptools

[DMRobertson]

Is this a breaking change---are there any backwards incompatabilities between 1.1 and 1.2?

Do you have an example of using this action with 1.2? I'd like to santiy check the logs---in particular that the caching mechanisms still do something useful.

[erikjohnston]

Is this a breaking change---are there any backwards incompatabilities between 1.1 and 1.2?

I'm not aware of any, beyond dropping support for 3.6 and below.

Do you have an example of using this action with 1.2? I'd like to santiy check the logs---in particular that the caching mechanisms still do something useful.

matrix-org/synapse#12595 has a lot of runs using 1.2.0 (where I've specifically overriden it).

[DMRobertson]

Thanks. I'm slightly terrified that stuff will break in CI (esp on branches that don't have your Rust PR's changes). But I think we should try it and see what happens.

Can you

• merge this
• do a v1.2.0 release
• move the v1 tag forward to v1.2.0? (Odd, but recommended by https://github.com/actions/toolkit/blob/master/docs/action-versioning.md#recommendations)

[erikjohnston]

Thanks. I'm slightly terrified that stuff will break in CI (esp on branches that don't have your Rust PR's changes). But I think we should try it and see what happens.

Yeah, me too. Though I think we're going to have to do it sometime so may as well just bite the bullet.