Full-upgrade (apt vs cupt)

[Javier Barroso <javibarroso@gmail.com>]

Hi list,

I wanted to test cupt [1], and then I tried a full-upgrade.

aptitude is not capable to resolve dependencies, but cupt yes. Like
cupt is very new, I would like to ask about why do you think this diff
is here:

# LANG=C aptitude full-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
The following packages are BROKEN:
  libempathy-gtk19 libempathy23 telepathy-mission-control-5
The following NEW packages will be installed:
  empathy-doc{a} geoclue{a} geoclue-hostip{a} geoclue-localnet{a}
geoclue-manual{a} geoclue-yahoo{a} libchamplain-0.4-0{a}
  libchamplain-gtk-0.4-0{a} libclutter-1.0-0{a}
libclutter-gtk-0.10-0{a} libempathy-gtk28{a} libempathy30{a}
libgeoclue0{a}
  libnm-glib0{a} libnm-util1{a}
The following packages will be upgraded:
  empathy libempathy-common libempathy-gtk-common
3 packages upgraded, 16 newly installed, 0 to remove and 0 not upgraded.
Need to get 1264kB/4890kB of archives. After unpacking 8774kB will be used.
The following packages have unmet dependencies:
  libempathy23: Depends: libempathy-common (= 2.26.2-1) but 2.28.0-1
is to be installed.
  libempathy-gtk19: Depends: libempathy-gtk-common (= 2.26.2-1) but
2.28.0-1 is to be installed.
  telepathy-mission-control-5: Conflicts: telepathy-mission-control
but 4.67-4 is installed.
The following actions will resolve these dependencies:

Keep the following packages at their current version:
empathy [2.26.2-1 (now)]
libempathy-common [2.26.2-1 (now)]
libempathy-gtk-common [2.26.2-1 (now)]
libempathy-gtk28 [Not Installed]
libempathy30 [Not Installed]
telepathy-mission-control-5 [Not Installed]

Tier: Safe actions (10000)

Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.

# cupt full-upgrade
W: attempt to set wrong option 'apt::periodic::update-package-lists'
W: attempt to set wrong option 'apt::periodic::download-upgradeable-packages'
Building the package cache... [done]
Initializing package resolver and worker... [done]
Scheduling requested actions... [done]
Resolving possible unmet dependencies...
The following 16 packages will be INSTALLED:

empathy-doc geoclue geoclue-hostip geoclue-localnet geoclue-manual
geoclue-yahoo libchamplain-0.4-0 libchamplain-gtk-0.4-0
libclutter-1.0-0 libclutter-gtk-0.10-0 libempathy-gtk28 libempathy30
libgeoclue0 libnm-glib0 libnm-util1 telepathy-mission-control-5

The following 3 packages will be UPGRADED:

empathy libempathy-common libempathy-gtk-common

The following 3 packages will be REMOVED:

libempathy-gtk19 libempathy23 telepathy-mission-control

Need to get 1235KiB/4775KiB of archives. After unpacking 7432B will be used.
Do you want to continue? [y/N/q] q

Is cupt resolver better than aptitude ones ? Or will it depend of the
case and packages status ?

Maybe aptitude is more conservative than cupt

Have you got any thought ?

Thank you very much !

[1] http://wiki.debian.org/cupt