feat: delete build caches after removing dependencies

[ankddev]

• Closes gleam remove could invalidate the build cache #5363
• Now it deletes the entire build directory after removing dependencies via gleam remove

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• The changes in this PR have been discussed beforehand in an issue
• The issue for this PR has been linked
• Tests have been added for new behaviour
• The changelog has been updated for any user-facing changes

[yoshi-monster]

Isn't running gleam clean afterwards way to broad since it also recompiles all dependencies? Wouldn't we just want to invalidate the top-level package?

[ankddev]

Yeah, I was thinking about that, drafted PR for now. Initially I wanted to implemebt it like in the LS, where we clean build directory for LSP mode, current target and current package. It's the information that we don't have in cleanup code. I will try to implement it anyway.

[ankddev]

@yoshi-monster Now it removes build directory only for the toplevel package, current target, and both dev and prod modes. What do you think?

[yoshi-monster]

Hello!!

Sorry, it looks like my github is still broken and won't send me emails.

Yeah, looks good to me! I don't know enough of the compiler if we could delete the cached type information but keep the generated code, but I don't think it matters that much. Thank you! 💜

[lpil]

Hello! Shouldn't we be removing the metadata for the removed package, not the root package?

[ankddev]

Makes sense to me, will do it tomorrow!

[ankddev]

@lpil I tested and found that removing cache for root package is needed here.

For instance, it already removes cache for dependencies here:

https://github.com/ankddev/gleam/blob/b325e95380ffb535e27029d54ce17408bc796d17/compiler-cli/src/dependencies.rs#L526-L563

From my tests issue is resolved only with cleaning cache of root package.

[lpil]

Lovely! Thank you for the investigation and the explanation. I understand why it wasn't working before now.

I've left a few tiny notes inline

[lpil]

Thank you!!