Tag devcontainers by the Python version they target?

[brettcannon]

Would it make any sense to add a Python version tag to devcontainer images? E.g. tag the latest images as 3.15 since that's what they target? We could then branch if a need arises to update container images for older Python versions.

The reason I'm thinking about this is any reference to the container images can use the Python version tag and make sure they are always getting the latest, appropriate version of the image.

Thought of this while contemplating if #12 is worth it.

[brettcannon]

How to make tags conditional: https://github.com/orgs/community/discussions/116955 .

[encukou]

Are older Python versions expected to be incompatible with newer WASI SDKs?

[brettcannon]

Are older Python versions expected to be incompatible with newer WASI SDKs?

Yes, at least out of the box (and there will be a forthcoming informational PEP about it to establish expected compatibility); python/cpython@f589f26 is an example of what can come up.

[encukou]

YAGNI, then.

The container should provide everything. There might be some maintenance effort needed for that, but I think it's worth it. I bisected across branches twice this week.

[brettcannon]

The container should provide everything. There might be some maintenance effort needed for that, but I think it's worth it.

There would be as not only would I have to install all the supported versions but I would have to change Tools/wasm/wasi to support picking the right WASI version when multiple versions are installed.

[encukou]

How does “the right WASI version” work? Is it based on the branch, or on commit?
Practically: if I do a git bisect, should I (or Tools/wasm/wasi) pick the right version for each commit, or is that version more stable?

[brettcannon]

How does “the right WASI version” work? Is it based on the branch, or on commit?

As I said there will be a PEP when this becomes a thing, but it will very likely locked down when a1 for a Python version is released (so the community knows what WASI SDK to use when building wheels which will be another PEP).

Practically: if I do a git bisect, should I (or Tools/wasm/wasi) pick the right version for each commit, or is that version more stable?

Way more stable; should be a single version for the life of a Python version.

[brettcannon]

I looked at the size of the current image and it's 1.6 GB, so I don't think there's a need to worry about installing up to 5 copies of the WASI SDK at 100 MB each, compressed.