[Bug 2082947] Re: [3.X] Packages in proposed ignored in noble+

[Dave Jones]

Ran into this last week when attempting to check a fix for LP: #2092216.
Incidentally, the "-t" option to explicitly pull from proposed is only
required because, by default, packages from proposed have a lower pin
priority. If configuration is added to give it equal pin priority to the
"-updates" pocket, it should install from proposed as normal.

For example, add something like /etc/apt/apt.conf.d/00enable-proposed
with the following content:

Package: *
Pin: release a=noble-proposed
Pin-Priority: 500

IIRC, the default priority for the proposed pocket in noble is 100, and
for release and updates it's 500, hence the above configuration makes
proposed equal, permitting its packages to be considered.

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https://bugs.launchpad.net/bugs/2082947

Title:
  [3.X] Packages in proposed ignored in noble+

Status in Ubuntu Image:
  New

Bug description:
  When building a noble+ image with the pocket proposed enabled, it
  appears packages are not fetch from proposed.

  This may be due to recent changes in apt explicitly requiring "-t
  <series>-proposed" to actually pull from proposed.

  This may also be due to changes in apt pinning (priorities).

  This issue went unnoticed in our tests. We need to devise a strategy
  to add some more robust spread tests to detect this.

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