[Bug 2083685] Re: Utilize SNAPSHOT_SERVICE_TIMESTAMP When Configuring Repositories

[Michael Hudson-Doyle]

I doubt it's proxies. But it could be that snapshot.ubuntu.com is not
available from the livefs builders -- which would be something that we'd
need to fix to work on this feature!

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https://bugs.launchpad.net/bugs/2083685

Title:
  Utilize SNAPSHOT_SERVICE_TIMESTAMP When Configuring Repositories

Status in livecd-rootfs package in Ubuntu:
  New
Status in livecd-rootfs source package in Focal:
  New
Status in livecd-rootfs source package in Jammy:
  New
Status in livecd-rootfs source package in Noble:
  New
Status in livecd-rootfs source package in Oracular:
  New

Bug description:
  # Background

  as of 20241004 (RIP w9xn), $SNAPSHOT_SERVICE_TIMESTAMP has been made
  available as an official environment variable in launchpad livefs
  builds. When a build is triggered with in launchpad with the metadata
  snapshot_service_timestamp, $SNAPSHOT_SERVICE_TIMESTAMP will be
  populated with the provided timestamp. This allows livecd-rootfs to
  configure the initial mirrors to use the snapshot service rather than
  the current overwrite cases.

  documentation on the snapshot service: https://snapshot.ubuntu.com/

  proposed patch by mwhudson: https://paste.ubuntu.com/p/5RtpSKm2QQ/

  This is only to enable the snapshot service in one variable. There are
  other variables throughout livecd-rootfs that reference archives which
  may need to be investigated

  LB_PARENT_MIRROR_BINARY
  LB_PARENT_MIRROR_BINARY_VOLATILE
  LB_PARENT_MIRROR_BINARY_SECURITY

  Section of code around $EXTRA_PPAS : livecd-rootfs/live-
  build/auto/config:1519 [0]

  Any hooks that add PPAs or change the default apt configurations may
  need to be investigated as well. if these are housed in private areas,
  and nested (looking at you CPC), then those will need to be handled by
  individual teams.

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