[gentoo-alt] RFC: emerge to different EPREFIX by different user

[Michael Haubenwallner]

Hi Grobian / all,

Although it is possible for one portage instance to merge to another
EPREFIX via environment variable, this does not work when this is done
by another *user*.

This is why I do apply a similar patch to portage in prefix-launcher,
which is snapshooted by another user than myself, while I bootstrap/run
the Prefixes as myself.

When EPREFIX != BPREFIX, attached patch uses the owner+group of the
target EPREFIX directory as the root- and portage- user+group
instead of the builtin ones.

I do not think this is a security issue, as portage will (should?) refuse
to do anything outside $EPREFIX, but I'm not fully sure (yet).

Thoughts?

Thank you!

/haubi/
-- 
Michael Haubenwallner
Gentoo on a different level