[WIP] Add CUDA 11.8 manual migrator

[jakirkham]

We are planning to drop CUDA 11.8 from the global pinnings as discussed in issue: #7404

Following the pattern that we have used in the past to readd old CUDA version like with PR: #1657

Provide a manual migrator that recipe maintainers can use to readd CUDA 11.8 in their feedstocks.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[jakirkham]

It looks like we need to add CUDA 11.8 last in the ordering for this to work correctly

With that in place this does appear to do the right thing

[jakirkham]

The Docker image lines with selectors get kind of long. Already squeezed them down quite a bit

Needed to bump this to keep the linter happy

[h-vetinari]

Thanks for doing this. I agree it's nice to provide a migrator for people to copy (even though I suspect it won't see much use 🤷). Did you test it with the state of #7431¹? Due to the zipping change (removing docker_image), there's potential for things to behave differently once it's been merged.

Footnotes

1. e.g. conda smithy rerender -e <local_pinning> ↩

[jakirkham]

Yeah exactly was testing with your PR removing CUDA 11.8 (and the zip_keys)

Think this is why we needed the ordering flipped for adding CUDA 11.8 above

Previously CUDA 11.8 would have been earlier in the list, but that causes problems without zip_keys. Moving it to the end seemed to resolve these issues

[h-vetinari]

Could you test it one last time now that cuda_compiler has also changed in #7431?