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Test pyflyby on CI as a downstream project #14957

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merged 4 commits into from
Aug 21, 2025

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@krassowski krassowski commented Aug 13, 2025

pyflyby includes an extension to IPython which integrates tightly with a substantial part of the IPython API.

Previous IPython releases broke pyflyby functionality; this may be acceptable if it happens in major releases, but there were instances were minor releases introduced incompatibilities which lead to downstream breakages.

This PR includes a single pyflyby test file that verifies the IPython-related integration in the downstream testing job. This is meant to serve as a canary test for breaking API changes in the completer, interactive help, and debug magics, all covered in the pyflyby test suite.

Should we decide that this is no longer needed, or that it introduces too much noise, this PR could be reverted in the future, but as of now it makes releasing new versions much easier as it alleviates the worry about breaking downstream functionality.

Before merging deshaw/pyflyby#398:

======= 5 failed, 114 passed, 30 skipped, 5 xfailed in 193.70s (0:03:13) =======

After:

======= 8 failed, 134 passed, 14 skipped, 2 xfailed in 344.92s (0:05:44) =======

@krassowski krassowski added this to the 9.5 milestone Aug 13, 2025
@krassowski krassowski merged commit ad94868 into ipython:main Aug 21, 2025
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@krassowski krassowski deleted the test-pyflyby branch August 22, 2025 11:52
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