gnome3-session miss gnome-shell dependance

[DarkRedman]

Binary package hint: aptitude

aptitude:
  Installé : (aucun)
  Candidat : 0.6.3-3.2ubuntu1
 Table de version :
     0.6.3-3.2ubuntu1 0
        500 http://fr.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages

I use Ubuntu 11.04

I tried to install the package gnome3-session, I expected that the installation worked completely.
But I get instead an error

Les paquets suivants contiennent des dépendances non satisfaites :
 gnome3-session : Dépend: gnome-shell mais il n'est pas installable
E: Paquets défectueux

The following packages has unsatisfied dependecies :
 gnome3-session : depend: gnome-shell but is not installable
E: defective packages

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: aptitude (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CheckboxSubmission: 940a4fc1d6a7e1dd235c31778f871d7c
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Sun Jun 5 10:54:21 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
ProcEnviron:
 LANGUAGE=fr_FR:en
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: aptitude
UpgradeStatus: No upgrade log present (probably fresh install)

[Micah Gersten (micahg)]

Moving to gnome-session since that's where the bug is

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported, but feel free to report any other bugs you find.