tests

Merge with distutils @ 5589d7527 #6213

Job	Run time
collateral (diffcov)	4m 22s
test_cygwin (39, windows-latest)	20m 3s
collateral (docs)	2m 5s
test (3.9, ubuntu-latest)	4m 23s
test (3.9, macos-latest)	6m 1s
test (3.9, windows-latest)	10m 30s
test (3.13, ubuntu-latest)	4m 46s
test (3.13, macos-latest)	4m 26s
test (3.13, windows-latest)	10m 45s
test (3.10, ubuntu-latest)	4m 14s
test (3.11, ubuntu-latest)	4m 12s
test (3.12, ubuntu-latest)	5m 12s
test (3.14, ubuntu-latest)	48s
test (pypy3.10, ubuntu-latest, stdlib)	16m 31s
test (ubuntu-latest, 3.10, stdlib)	4m 33s
integration-test	0s
check	1s
release	0s
	1h 42m 52s

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