Confused about installations - overlaying a "testing" package into a "stable" install
Hello. I'm a long time unix/linux geek, debian newbie. And I'm
confused about installs.
I understand that the "stable" distribution line is intended to be a
series of integrated packages.
I understand that "testing" is a set of newer packages, which have met a
set of stability criterion which make them plausible candidates for an
upcoming "stable" release, presuming they survive a burn in period.
So I have a stable installation. And I'm interested in trying/using a
particular package from "testing".
Must I create an entirely fresh "testing" install? Or should I be able
to simply overlay my package of interest by adding lines for the
"testing" repositories in my /etc/apt/sources.list and doing "apt-get
update && apt-get install newpackage"?
As in, is this a reasonable thing to expect to be able to do?
I tried it, but apt-get wanted to remove all of my kernels. And
somehow, without replacing them, I can't believe this is the right thing
to do, so I interrupted the install.
But if this isn't the right way to go about using a package from
"testing", then how are they expected to be used?