Work in progress, though mostly functional.
A tool to help update git submodules in the rust repo and test the updates.
When run in a terminal, it will use interactive prompts to verify certain steps. It will do everything up to just before committing and pushing a PR to GitHub.
Basic example, run inside the rust repo:
subup src/tools/cargo src/tools/rls
Example of updating a submodule on the beta branch:
subup --rust-branch beta rust-1.28.0:src/tools/cargo