Package: lintian Version: 2.104.0 lintian emits debian-rules-uses-supported-python-versions-without-python-all-build-depends for cracklib2. The tag description says that one should depend on python3-all for using py3versions. cracklib2 build depends on python3-all-dev, which depends on python3-all. I think that assuming this dependency is a reasonable expectation. A dependency on python3-all-dev should also be sufficient for using py3versions. lintian should not be emitting a warning here.
Helmut