[FFe] Sync empy 4.2.1-1 (universe) from Debian experimental (main)

[Jose Luis Rivero]

Please sync empy 4.2.1-1 (universe) from Debian experimental (main)

This is a major version upgrade of the EmPy templating system (3.x → 4.x).
I'm the maintainer of the package in Debian

== Rationale ==

 - This update to version 4.x has been in experimental waiting the patch for
   the ros-bloom package before being migrated to unstable. ros-bloom is
   not in Ubuntu so transition should have happened a while ago.
 - The current version 3.3.4 dates from 2019 and is unmaintained upstream
 - Version 4.2.1 fixes a Python 3.14 deprecation (codecs.open), which is
   relevant as Python 3.13 is in resolute and future Python versions will
   remove this API
 - The 4.x series has been in active development since late 2023 with
   significant improvements in functionality and maintainability

== Reverse Dependencies ==

 - python3-colcon-core: only direct reverse dependency. Tested
   successfully with empy 4.2.1

   $ seeded-in-ubuntu empy
   empy's binaries are not seeded.

== PPA Testing ==

  PPA build for empy + ros2-colcon-core
  - https://launchpad.net/~j-rivero/+archive/ubuntu/resolute-testing/+packages
  - https://code.launchpad.net/~j-rivero/+recipe/python3-empy-daily

== Local esting ==

  Full test logs: https://gist.github.com/j-rivero/aa838dc93b9b6ab194df0a6358cf4ae3

  Tested in ubuntu:resolute (Python 3.13.12) Docker container:

   Builds: YES - dpkg-buildpackage succeeds from debian/experimental
     packaging branch at https://code.launchpad.net/ubuntu/+source/empy

   Installs: YES - clean install on fresh ubuntu:resolute works,
     import em and basic templating functionality verified

   Upgrades: YES - upgrade from 3.3.4-2build1 to 4.2.1-1 works cleanly,
     functionality verified after upgrade

   Reverse dependencies: python3-colcon-core (0.20.0-1) works correctly
     after upgrading to empy 4.2.1 - colcon version-check and colcon list
     both function normally

== Upstream Changelog (key changes) ==

  4.2.1 (2026-02-08):
   - codecs.open is deprecated as of Python 3.14; use open instead in binary mode
   - Better proxy and module finder management
   - Uniform attachment and detachment of plugins
   - Add SimpleToken token factory

  4.2 (2024-08-25):
   - Add module support
   - Add support for disabling output and switch markup
   - Support repeated curly braces with functional expressions
   - Add backward-compatible Case abstraction for match markup

  4.1 (2024-03-24):
   - Add support for extension markup
   - Add @[match] control support
   - Add interpreter cores for overriding interpreter behavior

  4.0 (2023-11-29):
   - Major revamp and modernization
   - Relicensed to BSD
   - Full Unicode support, inline comments, control markup
   - Rewritten documentation

== Debian changelog ==

Changelog entries since current resolute version 3.3.4-2build1:

empy (4.2.1-1) experimental; urgency=medium

  * Fix autopkgtest
  * New upstream version 4.2.1

 -- Jose Luis Rivero <email address hidden> Thu, 12 Feb 2026 19:59:29 +0000

empy (4.2-2) experimental; urgency=medium

  * Bump standards version
  * Do not output -x on stderr but stdout

 -- Jose Luis Rivero <email address hidden> Fri, 06 Feb 2026 11:58:25 +0000

empy (4.2-1) experimental; urgency=medium

  [ Jose Luis Rivero ]
  * Move package under the scope of python-team
  * New upstream version 4.2
  * Bump standard to 4.7.0
  * Remove python2 tests
  * Update sample files in d/
  * Update d/control: upstream has correct shebang
  * Update d/copyright
  * Remove all empy3 and python2 packages
  * Remove empy3 exectuable and support em.py binary
  * Update d/docs
  * Rework autopkgtest

 -- Jose Luis Rivero <email address hidden> Wed, 27 Nov 2024 12:55:27 +0000

[Ural Tunaboyu (uralt)]

The rationale makes sense. However, the PPA build of python3-colcon-core looks problematic to me as it seems to have pulled in the previous version of python3-empty (grepping for empy in the logs surfaces version 3.3.4-2build1 instead of the new 4.2.1-1).

FFe is conditionally approved, given rebuilding python3-colcon-core actually succeeds against empy 4.2.1-1.

[Paride Legovini (paride)]

+1 on that, thanks Ural.

[Graham Inggs (ginggs)]

I confirmed in a PPA that ros2-colcon-core 0.20.0-1 still builds against empy 4.2.1-1.

[Graham Inggs (ginggs)]

This bug was fixed in the package empy - 4.2.1-1
Sponsored for Jose Luis Rivero (j-rivero)

---------------
empy (4.2.1-1) experimental; urgency=medium

  * Fix autopkgtest
  * New upstream version 4.2.1

 -- Jose Luis Rivero <email address hidden> Thu, 12 Feb 2026 19:59:29 +0000

empy (4.2-2) experimental; urgency=medium

  * Bump standards version
  * Do not output -x on stderr but stdout

 -- Jose Luis Rivero <email address hidden> Fri, 06 Feb 2026 11:58:25 +0000

empy (4.2-1) experimental; urgency=medium

  [ Jose Luis Rivero ]
  * Move package under the scope of python-team
  * New upstream version 4.2
  * Bump standard to 4.7.0
  * Remove python2 tests
  * Update sample files in d/
  * Update d/control: upstream has correct shebang
  * Update d/copyright
  * Remove all empy3 and python2 packages
  * Remove empy3 exectuable and support em.py binary
  * Update d/docs
  * Rework autopkgtest

 -- Jose Luis Rivero <email address hidden> Wed, 27 Nov 2024 12:55:27 +0000