Maintaining local ports

[Ian A. Tegebo]

I couldn't find anything in the handbook, freebsddiary, or the mailing
lists about maintaining your own ports within Ports.

I'd like to write ports that would install scripts local to my site such
that multiple hosts can cvsup our "local tree" and then be able to
install/uninstall using things like 'portupgrade'.  These would be ports
that only we would be interested in.

Gentoo has the portage overlay feature:

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=3&chap=5#doc_chap2

Does anyone know how FreeBSD may accomplish this?  

I've thought about creating my own ports mirror and then including my ports in 
something like /usr/ports/mysite (or /usr/ports/misc).

Has anyone tried this?

--
Ian Tegebo