- PAS: looks the most pluggable but doesn't seem to have a MySQL plugin
and is quite complicated at first glance.
- MySQLUserFolder: appears to fit the bill for authentication but no
changes since late 2005.
- ExUserFolder: also looks like it will deal with authentication but no
changes since early 2005.
You might want to have a look at SimpleUserFolder:
It allows arbitrary user properties and you can just write a ZSQL method
to get what you need from MySQL.
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