[Aptitude-devel] Bug#502766: aptitude: Does not resolve dependency correctly for hplip.

[Manuel A. Fernandez Montecelo]

Control: tags -1 + moreinfo


Hi Paul,

2008-10-19 15:44 Paul Menzel:
>Subject: aptitude: Does not resolve dependency correctly for hplip.
>Package: aptitude
>Version: 0.4.11.10-1
>Severity: normal
>
>*** Please type your report below this line ***
>
>Dear DDs,
>
>
>I safe-upgraded hplip but it suffered from bug #502055 [1], so I
>manually installed the package from before with
>
>dpkg -i /var/cache/apt/archives/hplip_2.8.6.b-1_i386.deb
>
>and put hplip and hplip-dbg on hold.
>
>When the bug was fixed I put issued unhold for the two packages, but
>safe-upgrade or install do not work. apt-get works though. Here is the
>output.
>
>$ LANG=C sudo aptitude install hplip
>Reading package lists... Done
>Building dependency tree
>Reading state information... Done
>Reading extended state information
>Initializing package states... Done
>Reading task descriptions... Done
>The following packages are BROKEN:
>  hpijs
>The following packages will be upgraded:
>  hplip
>1 packages upgraded, 0 newly installed, 0 to remove and 9 not upgraded.
>Need to get 238kB of archives. After unpacking 12.3kB will be used.
>The following packages have unmet dependencies:
>  hpijs: Depends: hplip (= 2.8.6.b-1) but 2.8.6.b-3 is to be installed.
>Unable to resolve dependencies!  Giving up...
>The following packages are BROKEN:
>  hpijs
>The following packages will be upgraded:
>  hplip
>1 packages upgraded, 0 newly installed, 0 to remove and 9 not upgraded.
>Need to get 238kB of archives. After unpacking 12.3kB will be used.
>aptitude failed to find a solution to these dependencies.  You can solve them yourself by hand or type 'n' to quit.
>The following packages have unmet dependencies:
>  hpijs: Depends: hplip (= 2.8.6.b-1) but 2.8.6.b-3 is to be installed.
>Resolve these dependencies by hand? [N/+/-/_/:/?]
>Abort.
>$ LANG=C sudo aptitude install hplip hplip-dbg
>Reading package lists... Done
>Building dependency tree
>Reading state information... Done
>Reading extended state information
>Initializing package states... Done
>Reading task descriptions... Done
>The following packages are BROKEN:
>  hpijs
>The following packages will be upgraded:
>  hplip hplip-dbg
>2 packages upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
>Need to get 1002kB of archives. After unpacking 12.3kB will be used.
>The following packages have unmet dependencies:
>  hpijs: Depends: hplip (= 2.8.6.b-1) but 2.8.6.b-3 is to be installed.
>The following actions will resolve these dependencies:
>
>Remove the following packages:
>hplip-dbg
>
>Keep the following packages at their current version:
>hplip [2.8.6.b-1 (now)]
>
>Score is -19809
>
>Accept this solution? [Y/n/q/?] n
>
>*** No more solutions available ***
>
>The following actions will resolve these dependencies:
>
>Remove the following packages:
>hplip-dbg
>
>Keep the following packages at their current version:
>hplip [2.8.6.b-1 (now)]
>
>Score is -19809
>
>Accept this solution? [Y/n/q/?] q
>Abandoning all efforts to resolve these dependencies.
>Abort.
>$ LANG=C sudo apt-get install hplip
>Reading package lists... Done
>Building dependency tree
>Reading state information... Done
>The following extra packages will be installed:
>  hpijs hplip-dbg
>Suggested packages:
>  hpijs-ppds hplip-doc kdeprint gtklp xpp openprinting-ppds
>The following packages will be upgraded:
>  hpijs hplip hplip-dbg
>3 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
>Need to get 1322kB of archives.
>After this operation, 16.4kB disk space will be freed.
>Do you want to continue [Y/n]? n
>Abort.
>
>
>I have not installed the packages, so I can help debugging. I also
>issued aptitude-create-state-bundle. The file is 37 MB big. Tell me if
>you need it.

Maybe I am missing something, the sequence of actions is a bit
confusing, but as far as I can see, the problem is that "hpijs: Depends:
hplip (= 2.8.6.b-1) but 2.8.6.b-3 is to be installed".

In the last of the commands, it correctly suggests to upgrade "hpijs
hplip hplip-dbg", which in principle should be a valid solution.  Was it
not so?


In any case, the resolver changed a lot in the years after this bug
report, and after so many years, I do not think that we can do much
about this bug report.


Cheers.
-- 
Manuel A. Fernandez Montecelo <manuel.montezelo at gmail.com>