Add --force-platform to conda-lock install command.

[jezdez]

Description

This selects a specific platform for installation instead of the current, native platform. Should be similar to conda/conda#11794, kinda.

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[maresb]

Thanks @jezdez! This makes sense.

Some initial thoughts:

1. We should add a test
2. I'm debating whether calling it the mundane --platform option is a good idea, since the use case is fairly obscure. Probably it's good for consistency, but I think we should at least indicate in the help string that the option is for forcing an override of the native platform, rather than something routine
3. For internal consistency, how about renaming install(platform=...) to install(force_platform=...)?

[maresb]

Hi @jezdez, unrelated question regarding #752...

Do you know who I'd need to approve this access token request?

[jezdez]

@maresb Yep, this went to the org admins and I just approved it! (more on the PR tomorrow)

[jezdez]

Thanks @jezdez! This makes sense.

Some initial thoughts:

1. We should add a test

I've added one, reusing one of the lockfiles to mimic installing an Intel macOS package on the macOS ARM64 GitHub runners.

2. I'm debating whether calling it the mundane --platform option is a good idea, since the use case is fairly obscure. Probably it's good for consistency, but I think we should at least indicate in the help string that the option is for forcing an override of the native platform, rather than something routine

I've updated the description

3. For internal consistency, how about renaming install(platform=...) to install(force_platform=...)?

That's fine, I've updated both the argument name as well as the CLI option to make sure it's obvious that it's not quite the same as the --platform of the render and lock subcommands.

[jezdez]

It's checking the subdir value of the metadata here

[maresb]

This looks really great @jezdez!

We can get this into the upcoming release. I still want to take one more careful look at it before merging.