Public bug reported:

[Impact]

maas-cluster-controller cannot be installed on a non-Intel system at
all. So, for example, a ppc64el cluster cannot be managed by a MAAS that
is running on ppc64el.

If we drop the dependency on syslinux-common for non-Intel
architectures, then this would work around the uninstallability problem.
But I think the consequence would be that MAAS running on a non-Intel
architecture will no longer be able to boot any Intel nodes. This would
be less bad, but still not good. Additionally, I don't think this would
lead to any kind of sensible error message. The UI would appear to
permit it, and it would fail.

[Details]

The following packages have unmet dependencies.
 maas-cluster-controller : Depends: syslinux-common but it is not installable

The relevant dependency is:

syslinux-dev | syslinux-common (<< 3:6.00~pre4+dfsg-5), syslinux-common

Version: 1.7.0~beta1+bzr2781-0ubuntu1 in Utopic.

maas-cluster-controller is "Architecture: all".

syslinux-common is "Architecture: amd64 i386" since 3:6.03~pre18+dfsg-1.

This is a regression caused by a change to the syslinux package that
landed in Utopic on 1 July.

Since we're beyond final freeze now, fixing this in syslinux without
risking regression is difficult. Any proposed solution that involves
changing syslinux packaging needs to be approved by the release team
first.

15:17 <rbasak> To me, the multiarch solution seems the best, and maybe
least regression risk for this point in the cycle I guess.

15:18 <rbasak> Assuming that change would be acceptable to the release
team.

15:18 <cjwatson> I'm afraid not

15:19 <cjwatson> It would be non-trivially complex, potentially affect a
bunch of other stuff, and it would be a lot of work to make our checks
understand multiarch.

** Affects: maas (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1383332

Title:
  maas-cluster-controller is uninstallable on non-Intel architectures

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