Migrate from patches to forks on CDEPS, CMEPS, cesm_share

[chrisb13]

We are currently doing the routine January upstream update of OM3. Broader details:
ACCESS-NRI/access-om3-configs#1028

As part of this process, we've decided to stop using patches in building CDEPS, CMEPS, cesm_share but rather use access-nri forks where the patches as needed are applied on top of upstream code (like what is done for CICE, WW3, MOM etc). See discussion:
#ocean-seaice > Upstream model component updates @ 💬

Summary

CDEPS
has 1 patch. 5 commits with history from @anton-seaice, @micaeljtoliveira and @ezhilsabareesh8.
has 1 new file. Quite a few commits involving @ezhilsabareesh8, @micaeljtoliveira, @aekiss and @anton-seaice.

CMEPS
has no patches. Nothing to do.

cesm_share
has 1 patch. 5 commits. Change radius of the earth -- @anton-seaice and removing openmp directive -- @micaeljtoliveira.

This issue is intended to coordinate/discuss these above changes.

Proposal

Here is a proposal which aimed at keeping the authorship of the people that originally committed the major part of the code changes above (the commits can't be cherry-picked because they are coming from patches and the latest update involves resolving conflicts).

For CDEPS: @ezhilsabareesh8 commits the patch and new file?
For cesm_share: @anton-seaice does the radius of the earth change and @micaeljtoliveira does the openmp one.

This proposal is based on a chat with @dougiesquire where we tried to infer the original "main" authors but the providence isn't always obvious. Interested to hear from @micaeljtoliveira, @aekiss, @ezhilsabareesh8 and @anton-seaice or anyone that contributed to these changes. Happy to do co-authored commits or other approaches yet to be suggested.

[chrisb13]

We now have 3 relevant branches in which we would ask the above people to add their changes:

1. https://github.com/ACCESS-NRI/CDEPS/tree/rc-cdeps1.0.86-0
2. https://github.com/ACCESS-NRI/CMEPS/tree/rc-cmeps1.1.31-0 (unlikely to be needed for this process)
3. https://github.com/ACCESS-NRI/CESM_share/tree/rc-share1.1.18-0

The first two have associated PRs (1 and 2)

[micaeljtoliveira]

@chrisb13 I'm happy for someone else to to the commits. Actually, I would prefer it. Also, in this specific case, no need for co-authorship.

[chrisb13]

@anton-seaice and @ezhilsabareesh8, as discussed at this morning's standup, these branches are ready to go:

• https://github.com/ACCESS-NRI/CDEPS/tree/rc-cdeps1.0.86-x
• https://github.com/ACCESS-NRI/CMEPS/tree/rc-cmeps1.1.31-x
• https://github.com/ACCESS-NRI/CESM_share/tree/rc-share1.1.18-x

Please note @micaeljtoliveira's preference, so feel free to commit that code at the same time. Note that we expect some of the code on it's own to fail, so please commit your code in such a way that access3-share compiles.

[anton-seaice]

Note that we expect some of the code on it's own to fail, so please commit your code in such a way that access3-share compiles.

Shall We push the corresponding change to rc-2026.01.000 directly in this repo as well ?

[anton-seaice]

Ok updated CESM_share:

ACCESS-NRI/CESM_share@2356728...1b15cc8

and

rc-2026.01.000

848a5ae...3b44248

[chrisb13]

Shall We push the corresponding change to rc-2026.01.000 directly in this repo as well ?

Sounds good.

Ok updated CESM_share

Great. Does this include openmp Micael's changes?

I imagine we need the CDEPS changes before we can test that it compiles?

[anton-seaice]

yes and yes

[ezhilsabareesh8]

I have updated CDEPS:

CDEPS/compare/upstream-main...ACCESS-NRI:CDEPS:rc-cdeps1.0.86-x

[anton-seaice]

I added the change from #17 as well to CDEPS and updated the rc-2026.01.000 branch. The access3-library Builds locally ok

[chrisb13]

Thanks both.

The access3-library Builds locally ok

Do you mean on your own Gadi spack install? (As in, CI still running.) The CI built ok!

[aekiss]

I'm not fussed if somebody else commits my changes