concurrency issues with rustup

[Ali-Amir]

I have multiple Rust projects in my repository that require rustup component installation (e.g., clippy). Currently, when I run moon check --all on a fresh machine moon starts calling rustup install clippy for each of the tasks in parallel. As a result I consistently get errors because rustup doesn't tolerate parallelism/concurrency. Is there a suggested way to handle this?

I know of concurrency flag and mutexes to accomplish this, but is it possible to limit the locking to toolchain setup only (as opposed to the whole task)? Or is there a way to move toolchain installation to a separate task of its own (I don't know how to do it because it seems to happen automatically)?

[milesj]

@Ali-Amir Are all the rust crates in different cargo workspaces?

It should only run once per cargo workspace.

[Ali-Amir]

Yes, some are in different workspaces and some are standalone crates.

[milesj]

In that case, it's working as intended. However, I'll add some internal locks/queues so that they all don't run at the same time.

[Ali-Amir]

Thanks! That would be super helpful!