[Bug 1921862] Re: Call germinate with -updates

[Jean-Baptiste Lallement]

We tried the workaround to add the packages as dependencies of Ubiquity
and rebuilding an ISO with the new Ubiquity and the dependencies pulled
automatically. Unfortunately, the result is not what is expected.

The packages are installed in the live session and the target file system.
AD is configured by Ubiquity as expected during installation.
The packages are marked to be kept after installation.

But at the end of the installation, the packages are removed then
reinstalled by the installer. As a consequence the configuration done
during installation is reset.

We tried to modify script/plugininstall.py and scripts/install.py to
force keep the packages by they are still considered garbage by apt and
removed.

Finally we added a list of packages to keep so they are not considered
to "autopurge" by Ubiquity, the packages are kept as expected by not
their dependencies even if they are strong one. The resulting
installation is completely inconsistent. Using this approach would mean
to manually calculate the list of dependencies of the packages to keep
and mark them as keep. This is clearly not something maintainable.

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Title:
  Call germinate with -updates

Status in livecd-rootfs package in Ubuntu:
  Triaged
Status in livecd-rootfs source package in Focal:
  Triaged

Bug description:
  In auto/config germinate is called with the release pocket only:
   (cd config/germinate-output && germinate --no-rdepends --no-installer \
                  -S $SEEDMIRROR -m $MIRROR -d $SUITE -s $SEED \
                  ${COMPONENTS:+-c "$COMPONENTS"} -a $ARCH)

  In LTSes some packages are in universe in the release pocket and in
  main in the update pocket.

  For example in focal:

  $ rmadison -s focal,focal-updates realmd adcli
   realmd | 0.16.3-3 | focal/universe | source, amd64, arm64, armhf, ppc64el, riscv64, s390x
   realmd | 0.16.3-3 | focal-updates | source, amd64, arm64, armhf, i386, ppc64el, riscv64, s390x
   adcli | 0.9.0-1 | focal/universe | source, amd64, arm64, armhf, ppc64el, riscv64, s390x
   adcli | 0.9.0-1 | focal-updates | i386
   adcli | 0.9.0-1ubuntu0.20.04.1 | focal-updates | source, amd64, arm64, armhf, ppc64el, riscv64, s390x

  When these packages are seeded but they have no reverse dependencies,
  for instances seeded in the live seed and only main and restricted are
  considered (for Ubuntu) then these packages are ignored (unknown) by
  germinate and not added to the live session.

  Here is an excerpt from the build log of Focal Ubuntu Deskop
  (https://launchpadlibrarian.net/530408277/buildlog_ubuntu_focal_amd64_ubuntu_BUILDING.txt.gz)

  Downloading http://ftpmaster.internal/ubuntu/dists/focal/main/binary-amd64/Packages.xz file ...
  Decompressing http://ftpmaster.internal/ubuntu/dists/focal/main/binary-amd64/Packages.xz file ...
  Downloading http://ftpmaster.internal/ubuntu/dists/focal/main/source/Sources.xz file ...
  Decompressing http://ftpmaster.internal/ubuntu/dists/focal/main/source/Sources.xz file ...
  Downloading http://ftpmaster.internal/ubuntu/dists/focal/restricted/binary-amd64/Packages.xz file ...
  Decompressing http://ftpmaster.internal/ubuntu/dists/focal/restricted/binary-amd64/Packages.xz file ...
  Downloading http://ftpmaster.internal/ubuntu/dists/focal/restricted/source/Sources.xz file ...
  Decompressing http://ftpmaster.internal/ubuntu/dists/focal/restricted/source/Sources.xz file ...
  * Downloading http://archive-team.internal/seeds/ubuntu.focal/STRUCTURE
  [...]
  ! Duplicated seed: ntfs-3g
  ? Unknown live package: realmd
  ? Unknown live package: adcli
  ! Duplicated seed: dirmngr
  [...]

  
  Germinate should be called with "-d ${SUITE},${SUITE}-updates" to consider both pockets.

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