Merge pull request #210 from skirpichev/fix-lib-sdir #206

Job	Run time
mypy	17s
pre-commit	11s
tests	5m 9s
isolated_tests (macos-11, 12.4, 3.x)	2m 35s
isolated_tests (macos-11, 13.0, 3.x)	2m 33s
isolated_tests (macos-12, 14.0, 3.x)	1m 30s
isolated_tests (macos-13, 14.2, 3.x)	1m 55s
isolated_tests (ubuntu-latest, 3.7)	19s
isolated_tests (ubuntu-latest, 3.8)	15s
isolated_tests (ubuntu-latest, 3.9)	14s
isolated_tests (ubuntu-latest, 3.10)	17s
isolated_tests (ubuntu-latest, 3.11)	17s
isolated_tests (windows-latest, 3.x)	38s
	16m 10s

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