Matplotlib 3.9.1

[tacaswell]

Attempt to merge the rc branch to main.

[beckermr]

We used cos6 like this for a long time and had no issues so fun!

[jakirkham]

Maybe we can use a different mirror source?

Looks like UC Irvine maintains one and it goes back quite a bit: https://mirrors.oit.uci.edu/centos/ (though that looks like it is missing something)

Alternatively we do the same thing we did with CentOS 6 and switch to the vault mirrors

[jakirkham]

Looks like @isuruf started a PR for the latter: conda-forge/docker-images#271

[jakirkham]

We have since deployed a fix

Restarting failed CI builds to see if these issues clear up

[jakirkham]

Looks like it is passing! 🥳

[xhochy]

There is already a 3.9.0 build uploaded to conda-forge. Should that be marked broken? Where did that come from?

[fhoehle]

There is already a 3.9.0 build uploaded to conda-forge. Should that be marked broken? Where did that come from?

IIUC: There is a rc branch in this feedstock which successfully built it: CI run and PR and final commit

[h-vetinari]

The rc branch needs to have something like the following in recipe/conda_build_config.yaml:

channel_targets:
  - conda-forge matplotlib_rc

and then rerender.

[xhochy]

Filed a PR here: #392

[tacaswell]

ah, I was wondering how the 3.9.0 files ended up on the main channel, we must have lost that config while trying to get the builds to work at all. We just did a 3.9.1 so moved this to draft until I get that updated.

[tacaswell]

Looks like azure has decided to not run in parallel....

[xhochy]

See conda-forge/status#181

[akrherz]

@conda-forge-admin please restart ci

[jobovy]

Version 3.9.1 doesn't seem to have made it to the conda-forge channel, even though it seems like it should have? conda search matplotlib -c conda-forge still lists 3.8.4 as the latest version and the conda-forge/matplotlib website doesn't have 3.9.1 either (even though the more recent matplotlib_rc labeled version from #392 was uploaded there). In my tests, I'm hitting DeprecationWarning: backend2gui is deprecated since IPython 8.24, backends are managed in matplotlib and can be externally registered. due to (I think) a conflict between the latest IPython 8.26.0 and matplotlib 3.8.4 that seems to be resolved in 3.9.0 (I think resulting from this PR: matplotlib/matplotlib#27948). I can get rid of this by pip installing 3.9.1, but would prefer to use the conda version. Thanks!

[larsoner]

Looking at the main branch builds I don't see an entry for this PR's merge:

https://dev.azure.com/conda-forge/feedstock-builds/_build?definitionId=617&_a=summary&repositoryFilter=605&branchFilter=211331

No idea why that would happen. Maybe we could bug the conda-forge folks about this (?) but as a naive attempted solution I'll open a blank PR that someone could merge if they wanted and we could see if that fixes things.

[h-vetinari]

Looking at the main branch builds I don't see an entry for this PR's merge:

The interop between github and azure pipelines is fragile; though it works 99+% of the time, there is stuff that breaks, one of them being the case here (no CI started after merge). In this scenario, if you're a regular maintainer, you could do

git checkout main  # make sure it's up to date
git commit --allow-empty -m "retrigger CI"
git push upstream main  # or whatever you named the remote corresponding to the feedstock

In case someone from core with access to our azure organisation is around, they can start it manually without that extra commit, which is what I've done now.