Python 3.13 dropped crypt from the stdlib, and openSUSE Leap 16 packages
neither legacycrypt nor crypt_r, so the server did not start there
without a pip install. Both of those only call crypt(3) from libcrypt,
which every distribution ships, so do that through ctypes as the last
resort, serialized because crypt(3) returns a static buffer. Its hashes
match the stdlib module byte for byte.
Move the import chain both callers carried into confluent.pwcrypt. The
legacycrypt Recommends is no longer needed.
Markus Hilger
b1ed925e40