[Bug 2127766] Please test proposed package

[Timo Aaltonen]

Hello Charles, or anyone else affected,

Accepted snapd into jammy-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/snapd/2.73+ubuntu22.04
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
jammy to verification-done-jammy. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-jammy. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/2127766

Title:
  snap run --strace doesn't work with sudo-rs [sudo -E not supported]

Status in snapd:
  Fix Committed
Status in rust-sudo-rs package in Ubuntu:
  Won't Fix
Status in snapd package in Ubuntu:
  New
Status in snapd source package in Jammy:
  Fix Committed
Status in snapd source package in Noble:
  Fix Committed
Status in snapd source package in Plucky:
  Fix Committed
Status in snapd source package in Questing:
  Fix Committed

Bug description:
  [SRU] 2.73:
  https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/2132084

  [ Impact ]

  Only impacts Ubuntu 25.10+
  With sudo-rs, -E` is ignored, which breaks snapd run --strace.

  [ Test Plan ]

  1. Reproduce with snapd snap < 2.73

  - Ensure sudo-rs installed
  - Run: snap run --strace <snap>.<app>
  - Expect: warning: preserving the entire environment is not supported, `-E` is ignored

  2. Prove fixed with snapd snap 2.73

  - Ensure sudo-rs installed
  - Run: snap run --strace <snap>.<app>
  - Expect: No warning

  ---original---

  sudo-rs became the default sudo in 25.10, which broke this snap run
  --strace,

  $ snap run --strace <snap>.<app>
  warning: preserving the entire environment is not supported, `-E` is ignored
  [sudo: authenticate] Password:
  error: exit status 1

  It does work if I switch back to GNU Coreutils' sudo. The reason being
  many required environment variables are no longer passed through, and
  the strace fails due to SNAP_INSTANCE_NAME not being set, before we
  get to execve'ing the snap application itself.

  I commented on this use case in the sudo-rs issue tracker:
  https://github.com/trifectatechfoundation/sudo-rs/issues/1299

  Maybe snapd needs to have a whitelist of environment variables?

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