Please drop libimath-dev dependency on python3-imath (fixed upstream in Debian)

[David Zuelke]

Debian have reverted the dependency of libimath-dev on python3-imap and applied a fix from upstream: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1061327

Aside from the reasons outlined there, this also cuts down on a lot of dependency clutter, because installing e.g. ImageMagick will otherwise pull in python3-numpy with a hefty install size (44 MB):

# aptitude why python3.11
i libmagickwand-dev Depends libmagickwand-6.q16-dev
i A libmagickwand-6.q16-dev Depends libmagickcore-6.q16-dev (= 8:6.9.12.98+dfsg1-5)
i A libmagickcore-6.q16-dev Depends libopenexr-dev
i A libopenexr-dev Depends libimath-dev (>= 3.1.2)
i A libimath-dev Depends python3-imath
i A python3-imath Depends python3-numpy (>= 1:1.22.0)
i A python3-numpy Depends python3.11:any
i A python3.11 Provides python3.11:any

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[David Zuelke (dzuelke)]

Debian have updated to 3.1.10 in experimental, but if that's not an option for noble, the following one-line cmakefile change could also be backported: https://github.com/AcademySoftwareFoundation/Imath/pull/361/files

[Ed Morley (edmorley)]

Graham - thank you for committing the fix, it's much appreciated. I'm not too familiar with the typical process for the `-proposed` repos, what's the timeline for the changes on `ubuntu/noble-proposed` being promoted to `ubuntu/noble`?

[Graham Inggs (ginggs)]

Hi Ed, usually a fix like this on its own would only take a day or two for its autopkgtests to run before it migrates [1].

However, due to the 64-bit time_t transition, it may take some days still before the updated package [2] is able to build on armhf.

[1] https://wiki.ubuntu.com/ProposedMigration
[2] https://launchpad.net/ubuntu/+source/imath/3.1.9-3.1ubuntu1

[David Zuelke (dzuelke)]

Thanks Graham for the quick turnaround here!

Looks like builds are all green now; any chance to get this merged? :)

[Graham Inggs (ginggs)]

Builds are all green and tests are all green, but we're still entangled with the 64-bit time_t transition.
Hopefully things will be able to migrate to the Noble release by the end of this week.

[Launchpad Janitor (janitor)]

This bug was fixed in the package imath - 3.1.9-3.1ubuntu1

---------------
imath (3.1.9-3.1ubuntu1) noble; urgency=medium

  [ Graham Inggs ]
  * Merge from Debian unstable, remaining changes:
    - Don't build python3-imath on i386

  [ Johannes Schauer Marin Rodrigues ]
  * cherry-pick upstream commit to prevent reverse B-D of libimath-dev
    from requiring python3-imath being installed
  * libimath-dev: drop dependency on python3-imath (LP: #2055398)

imath (3.1.9-3.1) unstable; urgency=medium

  * Non-maintainer upload.
  * Rename libraries for 64-bit time_t transition. Closes: #1064141

 -- Graham Inggs <email address hidden> Sun, 03 Mar 2024 19:46:48 +0000