Bug#40006: config which sources to use for upgrade/dist-upgrade or install

[Arthur Korn <arthur@korn.ch>]

Package: apt
Version: 0.3.18

Hello!

Often I'd like or I need to have the latest version of a package from unstable,
but don't want to upgrade everything to unstable.

I see three sensible ways to configure this, which could be used at the same time:
- per package/section:
	Have a file like this:
	
	unstable: abcde, X11/
	potato: DEFAULT

- per operation:
	potato: UPGRADE, DIST-UPGRADE
	unstable: INSTALL

- per priority:
	potato: REQUIRED, IMPORTANT

Such a thing would make apt-get even more helpful, since it helps to save bandwidth and
lets people run a stable distribution and still be able to use cutting-edge versions
where needed.

Thank you for a great distribution and this excellent tool,
-- Arthur Korn, who feels the urge to learn C ...

-- System Information
Debian Release: 2.2
Architecture: i386
Kernel: Linux turing 2.2.14 #1 Die Feb 22 20:04:06 CET 2000 i586

Versions of packages apt depends on:
ii  libc6                         2.1.3-8    GNU C Library: Shared libraries an
ii  libstdc++2.10                 1:2.95.2-9 The GNU stdc++ library