[Bug 2077495] [NEW] ubuntu-core-installer requires a newer subiquity on noble

[Michael Hudson-Doyle]

Public bug reported:

As mentioned in https://bugs.launchpad.net/ubuntu/noble/+source/livecd-
rootfs/+bug/2076307 there is a request to backport the ubuntu-core-
installer project to noble. It turns out that the subiquity that is
included by default on noble images is too old to support installing
core. Rather than updating subiquity on all images this close to the
point release, it seems safer to just override the subiquity channel for
this build.

[test plan]
We should build a livefs with a command like:

$ start-livefs-build --livefs=~mwhudson/+livefs/ubuntu/noble/test
--arch=amd64 --pocket proposed --project ubuntu-core-installer

build the results into an ISO and test them.

[regression potential]
The proposed change https://code.launchpad.net/~mwhudson/livecd-rootfs/+git/livecd-rootfs/+merge/471666 clearly does not affect the build of any other project so at worst, ubuntu-core-installer builds continue to be broken in some way.

** Affects: livecd-rootfs (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: livecd-rootfs (Ubuntu Noble)
     Importance: Undecided
     Assignee: Michael Hudson-Doyle (mwhudson)
         Status: In Progress

** Also affects: livecd-rootfs (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Changed in: livecd-rootfs (Ubuntu)
       Status: New => Invalid

** Changed in: livecd-rootfs (Ubuntu Noble)
       Status: New => In Progress

** Changed in: livecd-rootfs (Ubuntu Noble)
     Assignee: (unassigned) => Michael Hudson-Doyle (mwhudson)

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https://bugs.launchpad.net/bugs/2077495

Title:
  ubuntu-core-installer requires a newer subiquity on noble

Status in livecd-rootfs package in Ubuntu:
  Invalid
Status in livecd-rootfs source package in Noble:
  In Progress

Bug description:
  As mentioned in
  https://bugs.launchpad.net/ubuntu/noble/+source/livecd-
  rootfs/+bug/2076307 there is a request to backport the ubuntu-core-
  installer project to noble. It turns out that the subiquity that is
  included by default on noble images is too old to support installing
  core. Rather than updating subiquity on all images this close to the
  point release, it seems safer to just override the subiquity channel
  for this build.

  [test plan]
  We should build a livefs with a command like:

  $ start-livefs-build --livefs=~mwhudson/+livefs/ubuntu/noble/test
  --arch=amd64 --pocket proposed --project ubuntu-core-installer

  build the results into an ISO and test them.

  [regression potential]
  The proposed change https://code.launchpad.net/~mwhudson/livecd-rootfs/+git/livecd-rootfs/+merge/471666 clearly does not affect the build of any other project so at worst, ubuntu-core-installer builds continue to be broken in some way.

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