[Bug 1248437] Re: downgrade not working, package is removed

[Quinn Balazs]

*** This bug is a duplicate of bug 1248433 ***
    https://bugs.launchpad.net/bugs/1248433

** This bug has been marked a duplicate of bug 1248433
   incorrect behavior when dependency is missing for downgrade

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https://bugs.launchpad.net/bugs/1248437

Title:
  downgrade not working, package is removed

Status in “python-apt” package in Ubuntu:
  New

Bug description:
  Having the following scenario:

  Package: a
  Status: install ok installed
  Version: 2
  Depends: b (>> 1)
  Architecture: all

  Package: b
  Status: install ok installed
  Version: 2
  Architecture: all

  Package: a
  Version: 1
  Depends: b (<< 2)
  Architecture: all

  Package: b
  Version: 1
  Architecture: all

  
  If I want to mark_install a, version 1 then the package a, version 2 is marked for removal.
  I would expect that a, version 2 and b, version 2 to be downgraded to version 1.

  Tested on:
  -------------------
  Ubuntu 12.04 amd64
  python-apt                                   0.8.3ubuntu7.1

  Thanks

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