Sorting out Release 9380 to Present

[joepetrowski]

Note: This issue only applies to runtimes and not any node releases.

The following runtimes have a bug in XCM v3 that was fixed in #7081 and #7115.

• v938*
• v939*
• v940*

Polkadot is currently on v9370 and we are in the process of releasing 9420. However, some of these contain migrations, so we cannot skip them.

Notably:

• v9381: XCM, UMP, and GRANDPA
• v9400: Nomination Pools

Therefore, we have two options:

1. Move all migrations from 9380 to present into the next release and mark all interim releases as unsafe. Propose v9420 as the next runtime upgrade on Polkadot.
2. Backport 7081 and 7115 into all releases from v9380 to present and propose the new v9382 runtime on Polkadot.

[coderobe]

instead of rereleasing several runtimes and delaying .42 enactment even further i would opt to go with making sure that one contains all these migrations and jumping ahead

cc @chevdor @EgorPopelyaev thoughts?

[EgorPopelyaev]

I would also agree with Mara, cause several backports and new runtimes might create some confusion

[chevdor]

There has been quite some work and many fixes in v0.9.42 so it sounds much healthier indeed to focus on getting the runtimes 9420 through asap than to patch older runtimes.

[joepetrowski]

I'm cool with that decision, but I just looked at Polkadot. Can someone comb through the runtimes and see what migrations need to be brought forward for which chains into 9420?

Also remember Westend is on 9401 (so therefore up to date), and Kusama is on 9381 (so only needs 9391 and later migrations).

[coderobe]

Also remember Westend is on 9401 (so therefore up to date), and Kusama is on 9381 (so only needs 9391 and later migrations).

The migrations should have guards on them, so we can simply bring all of them forward.
I'll go check which ones are missing and prepare a pr.

[coderobe]

Looks like this is all, actually: 25fd5f5

[chevdor]

Closing:

• the migrations since 9380 have been included into the new release
• a special mention has been added to the release notes