request: CLI flag to list tier 1 & 2 target triples #1239
Description
Checklist
- I've looked through the issues and pull requests for similar request
- This feature could be solved with a custom docker image (optional)
Describe your request
I would love an automated way to enumerate the tier 1 and 2 target triples, so that I can loop over the mostly-working triples and avoid the more fringe triples.
Relates to rust-lang/rustup#3308
Describe why this would be a good inclusion for cross
Promotes automation, reduces mistakes.