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"James Youngman" 07-26-2008 11:51 AM

Broke /etc/apt/preferences when trying to use just one package from unstable.
I modified /etc/apt/{preferences,sources.list} to get just
flashplugin-nonfree from unstable. That seemed to work.
However, now I find that "apt-get install libsdl1.2-dev" results in
this error:

# apt-get install libsdl1.2-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libsdl1.2-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package libsdl1.2-dev has no installation candidate

Could somebody take a look at my preferences and sources.list files
and explain to me what I broke and how? I attach both files
(/etc/apt/sources.list.d is empty).


Thomas Preud'homme 07-27-2008 08:42 PM

Broke /etc/apt/preferences when trying to use just one package from unstable.
Le samedi 26 juillet 2008, Florian Kulzer a écrit*:


> Your apt_preferences has multiple matches for certain repositories
> and your last two rules put the priority of more or less everything
> to -1. I am not surprised that apt starts to become weird.
> Your goal can be achieved much simpler, with just one rule in
> preferences:
> Package: *
> Pin: release a=unstable
> Pin-Priority: 1
> This means that testing will normally be preferred to unstable
> (unless you ask for a package that is not in testing yet). In other
> words, you can upgrade your testing system like before, and whenever
> you want one or more packages from unstable you can call apt-get with
> "-t unstable", e.g.:
> apt-get -t unstable install flashplugin-nonfree

You can achieve the same behaviour by just adding this option in
apt.conf :

APT::Default-Release stable;
> --
> Regards, |
> Florian |


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