Just played Plack a bit and get a crufty app.psgi for Jifty apps. This can be placed in your Jifty app dir and run with plackup --app app.psgi, but you'll have to modify the line that sets JIFTY_APP_ROOT environment variable to your Jifty app path.

I hope this, and Jifty core, can be polished little bit so I don't have to localize *ENV and *STDOUT there.

Also, I tried this with mod_psgi, not working, always returning ABORT from dispatcher, very weird.

Keep hacking.