6df7dab2df
This PR creates separation between the `--with` environment and the environment we actually run in, which in turn solves issues like https://github.com/astral-sh/uv/issues/12889 whereby two invocations share the same `--with` environment, causing them to collide by way of sharing an overlay. Closes https://github.com/astral-sh/uv/issues/7643.