I finally got around to get Compiz 0.5.0 patched and compiled on Solaris :)

To make it easier, I've written a little script that checks if a system can easily run compiz.
You can run this script directly by pasting the line below in a terminal :

/usr/sfw/bin/wget -O - http://www.gnome.org/~erwannc/compiz/compiz-on-solaris-check.perl | /usr/bin/perl

If the result is positive then you can download the install script and run it.
Once installed, logout and login in JDS/gnome and click on the "Run Compiz 3D deskop" icon on the Deskop et voila !
To revert back to plain JDS/gnome click on the "Return to 2D Desktop". For usage tips see Moinak's blog.

The spec-file sources can be found on spec-file-extra as SFEcompiz.spec and SFEcompiz-settings.spec

Special Thanks to :
- Emmanuel Jannetti for his help on Perl and Scripting Issues.
- Mike Kiedrowski for the original version of the spec files and Doug Scott for the enhanced version of SFEcompiz.spec.
- Laca Peter for the autostart pointers.
- John M Martin for the Nvidia driver tips.