[Bug 1512505] Re: [SRU] [HWE] Backport efibootmgr 0.12-4 to 15.04

[Steve Langasek]

This is a new upstream version of efibootmgr, which has implications
well beyond the new version of fwupdate that this is intended to
facilitate.

Why is the breaks against 0.12-2?  (vs. 0.12-1)  If there is a specific
distro patch in 0.12-2, then I believe we should cherry-pick that patch
into vivid efibootmgr if possible, and adjust the breaks on the version
of efibootmgr in vivid.  If that isn't possible (because the patch
doesn't cherry-pick cleanly) we will need more detailed analysis of the
upstream changes between 0.11.0 and 0.12 to confirm that these are
sufficently low-risk.

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Title:
  [SRU] [HWE] Backport efibootmgr 0.12-4 to 15.04

Status in efibootmgr package in Ubuntu:
  New

Bug description:
  [Impact]
  Shipping fwupdate in 15.04 (hardware enablement tool; a firmware updater tool) requires the use of efivar > 0.16; which in turn requires a slightly newer version of efibootmgr (at least 0.12-2).

  [Test Case]
  - Install libefivar0.

  Installing libefivar0 will attempt to remove efibootmgr, which is
  quite unhelpful when one has to deal with EFI boot entries.
  Furthermore, efibootmgr is a Dependency of grub EFI images, of which
  the removal would likely be catastrophic to booting the system.

  [Regression Potential]
  Issues in efibootmgr would show up as the inability to configure new (or modify old) EFI boot entries; for example inability to install a boot image on some specific disks.

  efibootmgr is critical to the proper function of grub updates for EFI
  systems.

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