Hi, I have just finished writing a guide on how to use pkgsrc on OpenSolaris.
It tells you how to set up the necessary pkgsrc infrastructure and provides a
link to a set of my scripts and mk.conf files, which make it very easy to
deploy pkgsrc on Solaris. In particular:

- How to build packages inside a chroot jail
- How to bootstrap GCC from pkgsrc
- How to use SunPro and GCC compilers with pkgsrc
- How to make the most of SMP hardware to speed up package builds

The guide is located here: http://www.netctl.net/pkgsrc_solaris.html
Let me know if you have any questions, or if you find any errors.

Thanks.