Could you please recommend tutorials on developing one’s own
authentication mechanisms, without the use of industrial-strength
Is this tutorial from 2006 obsolete?
I spent several person-days trying to install and use
restful_authentication, but it was mostly a frustrating, labor-intensive
exercise in futility. [1, 2] I then found this prescient article by
David Heinemeier H. from 2005:
I don’t share his philosophical issues with pluggable engines, but in
practice, he seems to have been spot on. Impressive!
 The current issues are FixtureClassNotFound errors in the
out-of-the-box unit tests on Debian; I’ve tried Ruby 1.87 and 1.9.1,
each with two variations of restful-authentication:
(Why are those different, anyway?) FWIW, after some minor bug-fixing,
the plugin works fine on Mac OS X.
 I’ve also had headaches with git, which has a steep learning curve,
no matter how vehemently Linus decrees otherwise.