buf lint: import_used rule dont work with binpb input

[Liuxito2040]

Hi everyone!

I am trying to use buf lint to get the unused imports (I know it sounds overkill but I chose buf for good reasons), the thing is that I am not getting lint error related to unused imports (yes, I have proto files with unused imports) and it looks like the default config gets me the rest of the lint errors but the unused imports. Someone knows if using buf lint command with binpb input has limitations?

Thanks!

[doriable]

First of all, definitely not an overkill to lint for unused imports, that's why the rule is included in both the BASIC and STANDARD category, haha. That being said, there should not be any limitations on linting binpb files, all rules and configurations should be available.

I attempted to repro the issue by building a binpb file with an unused import:

$ buf lint out.binpb
main.proto:1:1:Files must have a package defined.
main.proto:5:1:Import "google/protobuf/timestamp.proto" is unused.
test.proto:1:1:Files must have a package defined.

Any chance you could provide a simple repro of the issue?