Children spawned as [sys.executable, -c, ...] put the working directory first on sys.path, so under 'make test-rust-extension' a source checkout shadows the installed wheel and the child imports a litellm with no compiled extension. A shared helper spawns them with -I and asserts the child resolved the same litellm.__file__ as the parent, and a new TQ009 rule flags un-isolated sys.executable spawns.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Replace the module-level LATEST_EDITS list with per-example callback
registry isolation, and import litellm names with from-imports in the
legacy callback shim so the module uses one import style.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The Rust bridge imported httpx to construct the provider error response, which
fails in the isolated wheel check where httpx is absent. Rust now raises
RustUpstreamError with a headers attribute and the Python lifecycle wraps it in
a typed UpstreamFailure carrying the httpx.Response before legacy mapping.
Test helpers gained call_native so pytest.raises blocks hold a single call
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
