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Description
https://github.com/rust-lang/rustc-dev-guide/blob/master/examples/rustc-driver-example.rs is a great example to get me started using rustc_interface, but I am stuck on how to point this query towards a file that references another crate. I want to use rustc to analyze a multi-crate project and build up info across all crates in the project.
I have a repo based directly on rustc-driver-example, showing my problem. See this example which attempts to produce HIR for a file which references another crate. It fails with:
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: failed while formatting fluent string `metadata_cannot_find_crate`:
message was missing
', compiler/rustc_errors/src/emitter.rs:1402:84
However I can generate a HIR for a file that does not depend on other crates.
What do I need to add to the config to make it aware of other crates?