Ubuntu wants to upgrade to 18.04 from 16.04, but there is no ubuntu.minimal for PPC32/Powerpc/Pmac For the Apple G4 machines.

[Adam Corbett]

I recently installed 16.04 on my Apple G4 PowerPC (PPC/PowerPC/Pmac). I was then prompted to upgrade to 18.04 which dropped support for PPC-32, so there is no ubuntu.mnimal for the upgrader to acquire. Since there is no support for my arch, I should not be promtped to upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.4.0-151.178-powerpc-smp 4.4.179
Uname: Linux 4.4.0-151-powerpc-smp ppc
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: powerpc
CrashDB: ubuntu
Date: Sun Jun 23 12:34:08 2019
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-06-23 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2019-06-23 12:33:01.631744
 Log time: 2019-06-23 12:33:08.535136
 Log time: 2019-06-23 12:33:55.971378
 Log time: 2019-06-23 12:34:26.377994
VarLogDistupgradeTermlog: