[Aptitude-devel] Bug#762932: aptitude: in an upgrade with 'U', aptitude chose to downgrade a package

[Vincent Lefevre]

On 2015-09-19 19:42:07 +0200, Vincent Lefevre wrote:
> since downgrading packages is not supported by Debian and can break
> the system.

and this can happen automatically with "aptitude full-upgrade -y":

$ aptitude full-upgrade -y -s
The following packages will be upgraded: 
  libldb1 
1 packages upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
Need to get 110 kB of archives. After unpacking 20.5 kB will be freed.
The following packages have unmet dependencies:
 samba-libs : Depends: libldb1 (< 2:1.1.21~) but 2:1.1.21-1 is to be installed.
The following actions will resolve these dependencies:

     Downgrade the following packages:                                          
1)     libldb1 [2:1.1.20-2 (now, testing) -> 2:1.1.17-2 (stable)]               
2)     libsmbclient [2:4.1.17+dfsg-4 (now, testing, unstable) -> 2:4.1.17+dfsg-2
3)     samba-libs [2:4.1.17+dfsg-4 (now, testing, unstable) -> 2:4.1.17+dfsg-2 (



The following packages will be DOWNGRADED:
  libldb1 libsmbclient samba-libs 
0 packages upgraded, 0 newly installed, 3 downgraded, 0 to remove and 2 not upgraded.
Need to get 4580 kB of archives. After unpacking 4096 B will be used.
Would download/install/remove packages.

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)