I'm new to regression tests on wine. Currently, I'm using Gentoo's portage to build the latest wine and I want to know if there is a tutorial on how to make the regression tests on Gentoo. I'm going to do what Austin English ask me to do at this bug (http://bugs.winehq.org/show_bug.cgi?id=21693). Since I'm new to it and I know that Gentoo is too fragile in building things out of portage, I'm afraid to break my current installation of wine. Is there a way to make a jail to test wine, without making changes to my system and to my current wine installation?