[Bug 944452] Re: Essential packages will be removed "lzma (due to dpkg)" when doing dist-upgrade

[Jean-Baptiste Lallement]

Thanks for taking the time to report this bug and helping to make Ubuntu
better. Could you please add the log files and subdirectories from
'/var/log/dist-upgrade/' to this bug report as separate attachments?
Thanks in advance.

** Package changed: dpkg (Ubuntu) => update-manager (Ubuntu)

** Changed in: update-manager (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/944452

Title:
  Essential packages will be removed "lzma (due to dpkg)" when doing
  dist-upgrade

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  When doing dist-upgrade from (fully patched) 10.04 LTS x64 "Lucid" to
  12.04 LTS x64 "Precise" (beta1) you are warned;

  WARNING: The following essential packages will be removed
  This should NOT be done unless you know exactly what you are doing!
    lzma (due to dpkg)

  
  I should note that the actual steps I followed from 10.04 were;

  source set to "lucid"
  upgrade
  dist-upgrade
  change sources to "precise"
  upgrade
  dist-upgrade

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