[Bug 1512501] Re: [SRU] [HWE] Backport efivar 0.21 to 15.04

[Jared Dominguez]

Steve:

Because you're going from 0.15-3 to 0.21-1, where major library changes
have occurred, efibootmgr heavily depends on libefivar, and
efibootmgr/efivar have a history of obscure bugs from corner cases.
You're free to avoid these extra steps if you like, but given the tight
relationship between efibootmgr and efivar, I wouldn't, particularly for
such a critical pair of packages.

efivar/git$ git log --oneline  Debian/0.15-3..Debian/0.20-1 | wc -l
121

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https://bugs.launchpad.net/bugs/1512501

Title:
  [SRU] [HWE] Backport efivar 0.21 to 15.04

Status in efivar package in Ubuntu:
  Fix Released

Bug description:
  [Impact]
  Shipping fwupdate in 15.04 (hardware enablement tool; a firmware updater tool) requires the use of efivar > 0.16.

  [Test Case]
  1) Attempt to build fwupdate in 15.04.
     Without efivar >=0.16, the build will fail to complete.
  2) verify that the efibootmgr package in vivid works with the libefivar0 in vivid-proposed.

  [Regression Potential]
  Limited to EFI installations. Issues in efivar may incur specific failures at handling EFI variables through efibootmgr; or when trying to build EFI images (which may show as unexpected behavior in these images).

  However, efivar 0.21 (the suggested version to use) is already
  shipping in 15.10 and has not been causing issues.

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