crate_universe builds not forwarding environment variables from `env` section of `cargo_config` ?

[sthornington]

We have TIMENS_TZ_FILTER set in the env section of the cargo_config toml file, but it doesn't appear to be getting forwarded to the cargo build of the timens crate - is this section supported by rules rust?

[UebelAndre]

Ah, that’s definitely something I didn’t think about. I think if the config is in the repo then it would be fair to render the environment variables but what about configs on the system (~/.cargo/config.toml)? I feel like those should be ignored?

I’m happy to review a PR for this :)

[sthornington]

Understood, any hints on where to begin would be appreciated. I didn't think that system cargo configs were even parsed? There's that error that emits if one is even in the parent directories of the bazel workspace?