Overview

There's currently no good way to install a local project as a lib in another local project.

See this Discord conversation

And provides a better workflow for: #5099

Implementation notes

• Adds new command lib.install.local
• The new command is effectively a branch.squash but from a different local project into the current lib.
• Slight alteration to the success message from: I installed foo as bar. -> I installed foo into lib.bar; IMO it's a little clearer where to look for things after they're installed, but happy to change it if others feel differently.

Interesting/controversial decisions

The controversial thing I could think of is if we just want to do something better, but that's a big design space and I think it's worth having this very practical fix in the meantime :)

Also, I didn't add any sort of checks for any existing lib that may be overwritten by a lib.install.local, I wanted it to be low friction when iterating on local deps a lot, and figure the user can always just undo if needed.

Test coverage

Added transcripts

Loose ends

I'd love to have some sort of local sym-link support or something, but that's a bigger separate discussion.