uv

c58675fd - Add an optional authentication policy to [index] configuration (#11896)

Add an optional authentication policy to [index] configuration (#11896) Adds a new optional key `auth-policy` to `[tool.uv.index]` that sets the authentication policy for the index URL. The default is `"auto"`, which attempts to authenticate when necessary. `"always"` always attempts to authenticate and fails if the endpoint is unauthenticated. `"never"` never attempts to authenticate. These policy address two kinds of cases: * Some indexes don’t fail on unauthenticated requests; instead they just forward to the public PyPI. This can leave the user confused as to why their package is missing. The "always" policy prevents this. * "never" allows users to ensure their credentials couldn't be leaked to an unexpected index, though it will only allow for successful requests on an index that doesn't require credentials. Closes #11600