## Summary
These were moved as part of a broader refactor to create a single
integration test module. That "single integration test module" did
indeed have a big impact on compile times, which is great! But we aren't
seeing any benefit from moving these tests into their own files (despite
the claim in [this blog
post](https://matklad.github.io/2021/02/27/delete-cargo-integration-tests.html),
I see the same compilation pattern regardless of where the tests are
located). Plus, we don't have many of these, and same-file tests is such
a strong Rust convention.
## Summary
Part of me wants to revert support for `--with "flask, requests"`, but
the multiple specifiers case actually isn't ambiguous, and handling it
is better than shipping a breaking change in a patch release.
Closes https://github.com/astral-sh/uv/issues/9081.