Adds a nix build .#rustDeps target to rust-enabled downstreams. This builds only the cargo+crane dependency derivations. The intended use case for this is: Parallel CI jobs on the same codebase (a job for nextest, a job for clippy, ...) being able to use a pre-warmed dependency cache instead of potentially having to rebuild all dependencies on their own.
Adds a `nix build .#rustDeps` target to rust-enabled downstreams. This builds only the cargo+crane dependency derivations. The intended use case for this is: Parallel CI jobs on the same codebase (a job for nextest, a job for clippy, ...) being able to use a pre-warmed dependency cache instead of potentially having to rebuild all dependencies on their own.