A proper way to install ports into a jail, from the host machine

[Kevin Way]

As it stands, many ports can be installed into a jail from the host 
machine by setting: PKG_DBDIR, PORT_DBDIR, X11BASE, LOCALBASE, 
LINUXBASE, MANPREFIX, PREFIX, LDCONFIG, and __MAKE_CONF.  As far as I 
know, this leaves two problems.

The first problem is that scripts which check for and create users (and 
change ownership on files/directories) aren't currently setup to do so 
with respect to a jailed environment.

The second problem is that it's all quite obscure.

As such, I'm wondering if there would be support for the addition of a 
JAILBASE variable, which would correctly set the aforementioned 
variables, and more importantly would handle user/group/file ownership 
issues correctly with respect to the jail.

Kevin Way
InsideSystems