Bug#518021: aptitude fails to purge slime in squeeze

[Mikhail Vasil'jev]

Package: slime
Version: 1:20090217-1
Severity: normal

I upgraded Lenny to Squeeze today, and tried to purge slime. 

sudo aptitude purge slime
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 will be REMOVED:
  slime{p} 
0 packages upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
Need to get 0B of archives. After unpacking 2269kB will be freed.
Do you want to continue? [Y/n/?] y
Writing extended state information... Done
(Reading database ... 123269 files and directories currently installed.)
Removing slime ...
/var/lib/dpkg/info/slime.prerm: line 24: unregister-common-lisp-source: 
command not found
dpkg: error processing slime (--purge):
 subprocess pre-removal script returned error exit status 127
Errors were encountered while processing:
 slime
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Reading package lists... Done             
Building dependency tree       
Reading state information... Done
Reading extended state information      
Initializing package states... Done
Reading task descriptions... Done 

-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/1 CPU core)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages slime depends on:
ii  emacsen-common                1.4.17     Common facilities for all emacsen

Versions of packages slime recommends:
pn  cl-swank                   <none>        (no description available)
ii  emacs [info-browser]       22.2+2-5      The GNU Emacs editor (metapackage)
ii  emacs22 [info-browser]     22.2+2-5      The GNU Emacs editor
ii  info [info-browser]        4.11.dfsg.1-4 Standalone GNU Info documentation 

slime suggests no packages.

-- no debconf information