Hi,
I think I know what happened, now. After adding the qt-kde.debian.net
repositories to my sources.list, I did an "aptitude update". Understandably,
apt would not fully trust the contents of the Release file until it had a valid
key for it. I had installed the key via "aptitude install pkg-kde-archive-
keyring", as per the instructions on http://qt-kde.debian.net/. But apt was
given no prompt to recheck and start trusting the contents of Release.
After I do a second "aptitude update", the output of "apt-cache policy" begins
respecting the conditions in the preferences file. I presume this is because,
now the key is good, apt trusts and extracts the contents of Release and
matches things as normal.
I've here CC'd the debian-kde list because this might be something worth
mentioning in the instructions. Certainly it was not obvious to me.
Peace,
Brendon
You wrote (2010-09-23 12:54):
> Hi,
>
> I'm trying to follow the instructions on http://qt-kde.debian.net/ to
> upgrade my KDE installation, but no matter what I do apt and aptitude seem
> to ignore any attempt to change the pin priority of the
> experimental-snapshots release, including setting it as the default
> release so that I may do a full-upgrade.
>
> For example, here's what I get from running "apt-cache -o APT::Default-
> Release="experimental-snapshots" policy kdebase-apps":
> kdebase-apps:
> Installed: 4:4.4.5-1
> Candidate: 4:4.4.5-1
> Version table:
> 4:4.5.1-0r2 0
> 500 http://qt-kde.debian.net/debian/ experimental-snapshots/main
> amd64 Packages
> *** 4:4.4.5-1 0
> 900 http://ftp.au.debian.org/debian/ testing/main amd64 Packages
> 500 http://ftp.au.debian.org/debian/ unstable/main amd64 Packages
> 100 /var/lib/dpkg/status
>
> Compare this to when I run "apt-cache -o APT::Default-Release="unstable"
> policy kdebase-apps":
> kdebase-apps:
> Installed: 4:4.4.5-1
> Candidate: 4:4.4.5-1
> Version table:
> 4:4.5.1-0r2 0
> 500 http://qt-kde.debian.net/debian/ experimental-snapshots/main
> amd64 Packages
> *** 4:4.4.5-1 0
> 900 http://ftp.au.debian.org/debian/ testing/main amd64 Packages
> 990 http://ftp.au.debian.org/debian/ unstable/main amd64 Packages
> 100 /var/lib/dpkg/status
>
> This is what I would expect: unstable is set to 990 priority. But in the
> former case, the pin priority is unchanged from what appears to be the
> default. This also seems to be ignoring the setting of 101 that I've added
> to /etc/apt/preferences (as per the instructions). I've tried it with that
> as the only entry in preferences, but the behaviour is the same.
>
> Apt seems to be ignoring the experimental-snapshots release. Perhaps
> because its name is hyphenated?
>
> My apt version is 0.8.5. I wonder if this is happening to anyone else, or
> is it just me?
>
> (Please CC as I'm not subscribed.)
>
> Peace,
> Brendon
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