Regression tests: Handle no packages gracefully#15933
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Before, when running regression tests for a certain version/platform combination that doesn't have any cases, mypy is run with invalid arguments (no files), and the tests fail. Now, a message is printed instead (unless the verbosity is `QUIET`) and the tests succeed.
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Test failures are only semi-related, but this PR is actually a prerequisite to fixing them in #15932. |
AlexWaygood
approved these changes
Jun 23, 2026
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Before, when running regression tests for a certain version/platform combination that doesn't have any cases, mypy is run with invalid arguments (no files), and the tests fail.
Now, a message is printed instead (unless the verbosity is
QUIET) and the tests succeed.