[Bug 1830823] Re: Ubuntu image builds broken for powerpc on xenial

[Robert C Jennings]

If I understand launchpad-buildd[1] correctly, snapd will be installed
regardless of livecd-rootfs' dependencies.  The fix needs to be in snapd
for powerpc on xenial.  I confirmed that with a -proposed build with
livecd-rootfs 2.408.50 we will still try to install snapd and fail the
build as before.

[1] https://bazaar.launchpad.net/~canonical-launchpad-branches
/launchpad-buildd/trunk/view/head:/lpbuildd/target/build_livefs.py#L89

** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-failed verification-failed-xenial

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https://bugs.launchpad.net/bugs/1830823

Title:
  Ubuntu image builds broken for powerpc on xenial

Status in livecd-rootfs package in Ubuntu:
  Invalid
Status in snapd package in Ubuntu:
  Invalid
Status in ubuntu-image package in Ubuntu:
  Invalid
Status in livecd-rootfs source package in Xenial:
  Fix Committed
Status in snapd source package in Xenial:
  New
Status in ubuntu-image source package in Xenial:
  Won't Fix

Bug description:
  [Impact]

  Currenty powerpc image builds are failing on xenial. livecd-rootfs is
  used to build our Ubuntu images and it depends on ubuntu-image.  With
  ubuntu-image 1.7 the snapd dependency was bumped to >= 2.38; which is
  not satisfiable on powerpc because snapd is not buildable on powerpc
  with gccgo (vs golang).

  Also, besides that, it seems that livecd-rootfs was directly depending
  on snapd as well. To save ourselves trouble, let's make that
  dependency arch-specific.

  [Test Case]

  Build test images on powerpc, those should now succeed.

  [Regression Potential]

  None. This is only an arch-specific dependency change which was never
  used (as it was not possible to work).

  [Original Description]

  livecd-rootfs is used to build our Ubuntu images and it depends on ubuntu-image.  With ubuntu-image 1.7 being published to xenial-updates the diff
  shows that the versioned dependency on snapd was bumped to >= 2.38; which is not satisfiable on powerpc because snapd is not buildable on powerpc with gccgo (vs golang).

  This affects xenial cloud image builds.

  Original description:

  This commit https://git.launchpad.net/livecd-
  rootfs/commit/debian/control?h=ubuntu/xenial&id=b8b2e343827adb9020d5b71f232c0361bd72685f
  added a depends on ubuntu-image but that package is not available on
  xenial for powerpc.  So powerpc image builds are failing. :(

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