Package files not accessible through env path injected through annotation

I am using http_archive to download third-party packages containing libraries, so I needed to compile my Rust binary.

In the `crates_repository` rule, I added `annotation` that includes the environment variables that cargo needs to compile the rust crate. In the environment variable, I specified in the format like this pointing to the library path: `$(location @//pkg:file)`. However, rust cannot access these files with the error `file not found`.

Am I missing something? Can some one point me to the right solution to this?

Thanks

Start by reproducing the issue with an http_archive package and the crates_repository annotation, using an environment variable containing `$(location @//pkg:file)`. Trace how that location is passed to the Rust compilation environment and compare the resolved path with the package file. Done means the Rust binary can access the annotated library path without a file-not-found error.

Written by the indexing model from the issue text.