How to debug apt-get dependencies
The subject line says it all. I have a condition where apt-get refuses to
upgrade. How can I figure out exactly what apt-get does not like:
Here follows my example run. The reason I use a versioned install is just
because otherwise apt-get just refuses to consider the upgrade. This is a
problem I have gotten before and found it quite hard to figure out the
reason, and is never sure if I really got the right solution. There must be a
way to figure out exactly what goes wrong.
First:
shakti:~# dpkg --compare-versions '4:3.1.0++kl-1' '>' '4:3.1.0+rc6+kl-3'; echo
"$?"
0
Ok, version 4:3.1.0++kl-1 is the greater version.
Now:
shakti:~# apt-get install -t unstable libkdecore4
Reading Package Lists... Done
Building Dependency Tree... Done
Sorry, libkdecore4 is already the newest version.
Done
0 packages upgraded, 0 newly installed, 0 to remove and 58 not upgraded.
Ooops. already the newest version?
But what about the following, and the compare-version above:
shakti:~# apt-cache show libkdecore4 | grep Version
Version: 4:3.1.0++kl-1
Version: 4:3.1.0+rc6+kl-3
shakti:~#
Let's try this:
shakti:~# apt-get install -t unstable libkdecore4=4:3.1.0++kl-1
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:
Sorry, but the following packages have unmet dependencies:
libkdecore4: Depends: libdcop4 (>= 4:3.1.0++kl) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: libkdefx4 (>= 4:3.1.0++kl) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: kdeinit4 (= 4:3.1.0++kl-1) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: libkdecore-data but it is not going to be installed
E: Sorry, broken packages
Note here that all those missing packages are existing, and according to the
dpkg compare-version above, have higher version numbers. apt-get is doing the
wrong thing above. Why is it not updating those packages shown, libdcop4,
libkdefx4 and kdeinit4, when there are newer version available that will
satisfy the dependencies?
the full output of the run follows in the end
Karolina
shakti:~# apt-get install -t unstable libkdecore4=4:3.1.0++kl-1
Reading Package Lists... Done
Building Dependency Tree... Done
Starting
Starting 2
Investigating libkdecore4
Package libkdecore4 has broken dep on libdcop4
Considering libdcop4 2082 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdefx4
Considering libkdefx4 2079 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on kdeinit4
Considering kdeinit4 1024 as a solution to libkdecore4 11796
Investigating libkdecore-data
Package libkdecore-data has broken dep on libkdecore4
Considering libkdecore4 11796 as a solution to libkdecore-data 285
Removing libkdecore-data rather than change libkdecore4
Investigating kdelibs4
Package kdelibs4 has broken dep on libkdecore4
Considering libkdecore4 11796 as a solution to kdelibs4 3
Removing kdelibs4 rather than change libkdecore4
Investigating kdelibs-dev
Package kdelibs-dev has broken dep on libkdecore4
Considering libkdecore4 11796 as a solution to kdelibs-dev 3
Removing kdelibs-dev rather than change libkdecore4
Investigating ksms
Package ksms has broken dep on kdelibs4
Considering kdelibs4 3 as a solution to ksms 0
Removing ksms rather than change kdelibs4
Investigating kio-locate
Package kio-locate has broken dep on kdelibs4
Considering kdelibs4 3 as a solution to kio-locate 0
Removing kio-locate rather than change kdelibs4
Investigating libkdegames-dev
Package libkdegames-dev has broken dep on kdelibs-dev
Considering kdelibs-dev 3 as a solution to libkdegames-dev 0
Removing libkdegames-dev rather than change kdelibs-dev
Investigating libkscan-dev
Package libkscan-dev has broken dep on kdelibs-dev
Considering kdelibs-dev 3 as a solution to libkscan-dev 0
Removing libkscan-dev rather than change kdelibs-dev
Investigating kickpim
Package kickpim has broken dep on kdelibs4
Considering kdelibs4 3 as a solution to kickpim 0
Removing kickpim rather than change kdelibs4
Investigating koffice-dev
Package koffice-dev has broken dep on kdelibs-dev
Considering kdelibs-dev 3 as a solution to koffice-dev 0
Removing koffice-dev rather than change kdelibs-dev
Investigating libkdecore4
Package libkdecore4 has broken dep on libdcop4
Considering libdcop4 2082 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdefx4
Considering libkdefx4 2079 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on kdeinit4
Considering kdeinit4 1024 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdecore-data
Considering libkdecore-data 285 as a solution to libkdecore4 11796
Added libkdecore-data to the remove list
Fixing libkdecore4 via keep of libkdecore-data
Investigating libkdecore-data
Package libkdecore-data has broken dep on libkdecore4
Considering libkdecore4 11796 as a solution to libkdecore-data 285
Removing libkdecore-data rather than change libkdecore4
Investigating libkdecore4
Package libkdecore4 has broken dep on libdcop4
Considering libdcop4 2082 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdefx4
Considering libkdefx4 2079 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on kdeinit4
Considering kdeinit4 1024 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdecore-data
Considering libkdecore-data 285 as a solution to libkdecore4 11796
Added libkdecore-data to the remove list
Fixing libkdecore4 via keep of libkdecore-data
Investigating libkdecore-data
Package libkdecore-data has broken dep on libkdecore4
Considering libkdecore4 11796 as a solution to libkdecore-data 11796
Removing libkdecore-data rather than change libkdecore4
Investigating libkdecore4
Package libkdecore4 has broken dep on libdcop4
Considering libdcop4 2082 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdefx4
Considering libkdefx4 2079 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on kdeinit4
Considering kdeinit4 1024 as a solution to libkdecore4 11796
Package libkdecore4 has broken dep on libkdecore-data
Considering libkdecore-data 11796 as a solution to libkdecore4 11796
Considering libkdecore-data 11796 as a solution to libkdecore4 11796
Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:
Sorry, but the following packages have unmet dependencies:
libkdecore4: Depends: libdcop4 (>= 4:3.1.0++kl) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: libkdefx4 (>= 4:3.1.0++kl) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: kdeinit4 (= 4:3.1.0++kl-1) but 4:3.1.0+rc6+kl-3 is to
be installed
Depends: libkdecore-data but it is not going to be installed
E: Sorry, broken packages
shakti:~#
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