How would this feature be useful?

uv added a cross-platform lock format in 0.3.0. I can see this to become a standard for packages to keep CI stable.

Given that uv sync doesn't have target-installations (yet), it's tricky

Describe the solution you'd like

I think it would be really cool if session.install(".[tests]") automatically discovered a uv.lock file and ran uv sync --extra tests but I could live with session.sync("extras") too.

Either would improve the overall Python DX tremendously.

Describe alternatives you've considered

Hand-craft it, I guess? One has to do manual change directories etc tho.

Anything else?

No response