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[Daniel Hartwig <871819@xxxxxxxxxxxxxxxxxx>]

> sudo	update-alternatives --set python /usr/bin/python2.6
> to set python to what I want (python-2.6).
> This seems to be the preferred way to select python version.

The preferred -- and supported -- way to select a python version is to
explicitly use python2.7, python2.6, etc. when you need a specific
version.  You should never alter the /usr/bin/python symlink.

Using update-alternatives on /usr/bin/python is not supported.[1,2]

[1] https://bugs.launchpad.net/ubuntu/+source/python-defaults/+bug/782441/comments/1
[2] https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/501022/comments/2


** Changed in: gwibber
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/871819

Title:
  Gwibber will not find python2.7, when /usr/bin/python is linked to an
  earlier version

Status in Gwibber:
  Invalid

Bug description:
  I am running Ubuntu 11.04 linux for some specific purpose where python 2.7 does not work.
  I am using:
  sudo	update-alternatives --install /usr/bin/python python /usr/bin/python2.6 10
  sudo	update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1
  sudo	update-alternatives --set python /usr/bin/python2.6
  to set python to what I want (python-2.6).
  This seems to be the preferred way to select python version.

  When I do this, then gwibber will break the upgrade function.

  Even if I reset using
  sudo	update-alternatives --set python /usr/bin/python2.7
  upgrade fails, since this ssems to require that
  /usr/bin/python is linked to /usr/bin/python2.7

  The method above creates a link from 
  /usr/bin/python to /etc/alternatives/python
  and another link from 
  /etc/alternatives/python to /usr/bin/python2.7
  which should work, but this still breaks the upgrade.

  It is not only the gwibber upgrade that is broken. 
  The GUI upgrade handler is frozen until 
  /usr/bin/python is set to /usr/bin/python2.7.

  Also, It it not possible to deinstall gwibber (until you create the link
  /usr/bin/python -> /usr/bin/python2.7

  I think that if /usr/bin/python2.7 is installed on the system,
  then gwibber should work, regardless if /usr/bin/python
  is set to this or not.
  Possibly with the use of an environment variable...

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