moin, moin,

debian is working on a way to grab a package from a specific dist,
e.g. stable, testing or unstable. The new mechanism will be something
like:

apt-get sudo/testing

In the meantime grab the following tarball and unpack it from /.

http://home.pages.de/~lufthans/unix/packages/apt-tu.tgz

This adds apt-test, apt-cache-test, apt-uns and apt-cache-uns to
/usr/local/bin as well as sources files for test and uns and some other
sundry things for the backend.

With this you can keep the 3 dists separate.

apt-test update
apt-test install sudo

Half of my machines are exclusivelely testing. Been using these things
for months, just keep not getting to putting them up for others to use.

ciao,

der.hans
-- 
#  der.hans@LuftHans.com   home.pages.de/~lufthans/   www.YourCompanyHere.net ;-)
#  Practice socially consious hedonism. Do whatever you want,
#  as long as it doesn't hurt anyone else. - der.hans