[Python-apps-team] Bug#645494: mercurial uninstallable on Squeeze?

[clayton]

Package: mercurial
Version: 1.3.1-1~bpo50+2
Severity: important


I just upgraded a machine from Lenny to Squeeze, 
and apt-get dist-upgrade removed mercurial in the process.
And somehow I am now in this state:

# apt-get install mercurial
Reading package lists... Done
Building dependency tree       
Reading state information... 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.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 mercurial : Depends: python (< 2.6) but 2.6.6-3+squeeze6 is to be installed
             Depends: mercurial-common (= 1.3.1-1~bpo50+2) but it is not going to be installed

Note that both Python 2.5 and 2.6 are installed.

-- System Information:
Debian Release: 6.0.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages mercurial depends on:
ii  libc6                   2.11.2-10        Embedded GNU C Library: Shared lib
pn  mercurial-common        <none>           (no description available)
ii  python                  2.6.6-3+squeeze6 interactive high-level object-orie
ii  python-support          1.0.10           automated rebuilding support for P
ii  ucf                     3.0025+nmu1      Update Configuration File: preserv

mercurial recommends no packages.

Versions of packages mercurial suggests:
pn  kdiff3 | tkd <none>                      (no description available)
pn  qct          <none>                      (no description available)
ii  vim          2:7.2.445+hg~cb94c42c0e1a-1 Vi IMproved - enhanced vi editor
pn  wish         <none>                      (no description available)