[Bug 1042916] Re: sourceslist.SourcesList doesn't reuse disabled sources entries

[Launchpad Bug Tracker]

This bug was fixed in the package python-apt - 0.8.7ubuntu1

---------------
python-apt (0.8.7ubuntu1) quantal; urgency=low

  [ James Hunt ]
  * python/cache.cc: PkgCacheGetIsMultiArch(): Return calculated
    value rather than a random one.

  [ Michael Vogt ]
  * merged fixes from the debian-sid branch

python-apt (0.8.8) UNRELEASED; urgency=low

  [ Program translation updates ]
  * po/pl.po: Polish (Michał Kułach) (closes: #684308)

  [ Michael Vogt ]
  * merged lp:~sampo555/python-apt/fix_1042916 reuse existing but
    disabled sources.list entries instead of duplicating them.
    Thanks to "sampo555", LP: #1042916

python-apt (0.8.7) unstable; urgency=low

  [ Translation updates ]
  * po/es.po: Spanish translation updated by Omar Campagne (closes: #679285)
  * po/ja.po: Japanese translation updated by Kenshi Muto (closes: #679652)

  [ Jakub Wilk ]
  * Fix typos: the the -> the (closes: #679432)

  [ Julian Andres Klode ]
  * apt/auth.py:
    - Do not merge stdout and stderr (Closes: #678706)
    - Forward stderr from apt-key to our stderr if non-empty
 -- Michael Vogt <michael.vogt at ubuntu.com>   Mon, 01 Oct 2012 13:47:43 +0200

** Changed in: python-apt (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1042916

Title:
  sourceslist.SourcesList doesn't reuse disabled sources entries

Status in “python-apt” package in Ubuntu:
  Fix Released

Bug description:
  If sourceslist contains a disabled entry (commented out) and the
  exactly same entry is added with sourceslist.SourcesList.add method,
  new entry is created instead of enabling the disabled duplicate.

  Steps to reproduce:
  1. Add a repository:
    # apt-add-repository 'deb http://ppa.launchpad.net/videolan/stable-daily/ubuntu precise main'
  2. Edit sources.list and comment out the newly added entry
  3. Add it again:
   # apt-add-repository 'deb http://ppa.launchpad.net/videolan/stable-daily/ubuntu precise main'
  4. Notice the duplicated lines: one disabled, the other enabled

  What should happen:
  4. The disabled line is now enabled.

  Why this happens:
  On line 316 the condition 'set(source.comps) == comps' will always be False (at least with python 2.7 and 3.2) as you can see doing following in a python shell:
  >>> set([]) == []
  False
  >>> set(["precise", "main"]) == ["precise", "main"] # this was the case in the example above.
  False

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: python-apt 0.8.3ubuntu7
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  Date: Tue Aug 28 22:02:45 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=fi_FI.UTF-8
   SHELL=/bin/bash
  SourcePackage: python-apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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