A testing question: if I want to generate an ARM64 equivalent of

src/python/pants/backend/python/goals/platform-linux-py38.json

how do I do this? Working through fixing the tests that hard-code AMD64.

That's a "complete platforms" file: https://www.pantsbuild.org/2.24/docs/python/overview/pex#generating-the-complete_platforms-file

Perfect! Thanks @broad-processor-92400 I added one for Linux ARM64, and confirmed it fixes the issue locally.

vscode ➜ /workspaces/pants (fix-vscode-devcontainer-arm64) $ ./pants test src/python/pants/backend/python/goals/package_pex_binary_integration_test.py 
12:16:44.06 [INFO] Completed: Run Pytest - src/python/pants/backend/python/goals/package_pex_binary_integration_test.py:tests - succeeded.

✓ src/python/pants/backend/python/goals/package_pex_binary_integration_test.py:tests succeeded in 35.20s.