I am using a OkiPage8w Lite printer which doesn't really work with standard Ghostscript. You can use oki4drv and oki4daemon to make it work but it is really quite complicated.
Much saner approach is using ESP ghostscript from CUPS site
, but you have to build it yourself and you have to update SELinux context of the installed files (so that CUPS works with it):
chcon --reference /usr/bin/gs /usr/local/bin/gs
Is there any possibility to include ESP ghostscript into the distribution (maybe instead of standard gs)?