Bug#1061327: libimath-dev: please drop dependency on python3-imath

Mon Jan 22 17:38:48 GMT 2024

Package: libimath-dev
Version: 3.1.9-3
Severity: normal
Tags: patch
User: debian-cross at lists.debian.org
Usertags: cross-satisfiability

Hi,

five months ago, bug #1050349 was reported due to a missing dependency of
libimath-dev on python3-imath. The bug was resolved by adding that dependency.
Choosing this solution resulted in the following 134 source packages gaining
one additional cross build satisfiability problem because they will attempt to
install the host architecture version of python:

actiona amberol auto-multiple-choice beads blender budgie-control-center
calligra chafa cheese cimg converseen darknet darktable digikam dmtx-utils
drawtiming dvdauthor dx embree enblend-enfuse eviacam exactimage ffcv field3d
freecad freeimage frei0r gegl gem gimp gmic gnome-authenticator
gnome-dvb-daemon gnome-metronome gnome-sound-recorder gnome-subtitles gnunet
gnustep-gui gst-plugins-bad1.0 gstreamer-editing-services1.0 gstreamer-vaapi
gst-rtsp-server1.0 gtk4 hugin imagemagick imview inkscape jmagick jpeg-xl
kimageformats kio-extras krita kxstitch kylin-scanner lebiniou libopenshot
libvigraimpex luminance-hdr megapixels mgba mia mldemos mlt monado mrgingham
mrpt mupen64plus-core nheko nip2 nitrokey-authenticator node-opencv nomacs
nvidia-texture-tools nvidia-vaapi-driver obs-advanced-scene-switcher odr-padenc
olive-editor opencfu opencolorio opencv openexr openexr-viewers openimageio
openvdb os-autoinst osm2pgsql otb otpclient performous pfstools photoqt
php-facedetect php-imagick pink-pony pitivi povray pqiv pragha pstoedit
pulseeffects pythonmagick pytorch pyzbar qimgv rails r-cran-magick
ros-image-pipeline ros-image-transport-plugins ros-opencv-apps
ros-vision-opencv rss-glx ruby-image-processing ruby-rmagick ruby-vips
rust-gstreamer-play rust-gstreamer-play-sys rust-zbar-rust sayonara sight
simple-whip-client siril slic3r-prusa swayimg synfig synfigstudio
ukui-biometric-auth ukui-biometric-manager ukui-control-center ukui-greeter
ukui-screensaver uprightdiff vdr-plugin-skinenigmang vips virtuoso-opensource

To resolve the situation I approached imath upstream in this issue:

https://github.com/AcademySoftwareFoundation/Imath/issues/360

The resulting pull request was since merged into main:

https://github.com/AcademySoftwareFoundation/Imath/pull/361

In this bug I'm asking you to cherry-pick that commit from the upstream main
branch and apply it to the package even before the next upstream release with
that commit in it happens. I attached a debdiff that is doing exactly that for
your convenience.

Doing so will greatly help with maintaining a downstream Debian Pure Blends
that I am maintaining for the MNT Reform open source laptop.  For gstreamer to
do the right thing, we are backporting some patches from gstreamer upstream but
we need to cross-compile it because the MNT Reform is an arm64 laptop and our
build machine is a normal Intel box. With this patch applied, build times get
reduced from 1.5 hours to just under 4 minutes. This is a tremendous help when
developing for that platform as you can probably imagine (and helps reducing
our carbon emissions by a tiny bit).

Note also, that this bug is distinct from #1060843. That bug is about imath
itself failing to cross-build. This bug is about packages that need imath
failing to cross-build.

Thank you for considering!

cheers, josch
-------------- next part --------------
diff -Nru imath-3.1.9/debian/changelog imath-3.1.9/debian/changelog

--- imath-3.1.9/debian/changelog	2023-09-04 14:11:55.000000000 +0200
+++ imath-3.1.9/debian/changelog	2024-01-22 17:54:01.000000000 +0100
@@ -1,3 +1,12 @@
+imath (3.1.9-3.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * 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 (Closes: #-1)
+
+ -- Johannes Schauer Marin Rodrigues <josch at debian.org>  Mon, 22 Jan 2024 17:54:01 +0100
+
 imath (3.1.9-3) unstable; urgency=medium
 
   * debian/control: add python3-imath as dep to -dev
diff -Nru imath-3.1.9/debian/control imath-3.1.9/debian/control
--- imath-3.1.9/debian/control	2023-09-04 14:09:31.000000000 +0200
+++ imath-3.1.9/debian/control	2024-01-22 17:54:01.000000000 +0100
@@ -47,7 +47,6 @@
 Multi-Arch: same
 Depends:
  libimath-3-1-29 (= ${binary:Version}),
- python3-imath,
  ${misc:Depends},
  ${shlibs:Depends}
 Pre-Depends:
diff -Nru imath-3.1.9/debian/patches/0001-src-python-config-ModuleDefine.cmake-do-not-install-.patch imath-3.1.9/debian/patches/0001-src-python-config-ModuleDefine.cmake-do-not-install-.patch
--- imath-3.1.9/debian/patches/0001-src-python-config-ModuleDefine.cmake-do-not-install-.patch	1970-01-01 01:00:00.000000000 +0100
+++ imath-3.1.9/debian/patches/0001-src-python-config-ModuleDefine.cmake-do-not-install-.patch	2024-01-22 17:48:31.000000000 +0100
@@ -0,0 +1,29 @@
+From 7d58bb722faccd21d336cd0de52f611bac00a9c5 Mon Sep 17 00:00:00 2001
+From: josch <josch at mister-muffin.de>
+Date: Mon, 22 Jan 2024 00:55:39 +0000
+Subject: [PATCH] src/python/config/ModuleDefine.cmake: do not install a cmake
+ file exporting targets for dependent projects (#361)
+
+Thanks: Jochen Sprickerhof
+Closes: #360
+
+Signed-off-by: Johannes Schauer Marin Rodrigues <josch at mister-muffin.de>
+---
+ src/python/config/ModuleDefine.cmake | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/python/config/ModuleDefine.cmake b/src/python/config/ModuleDefine.cmake
+index b406362..adee61c 100644
+--- a/src/python/config/ModuleDefine.cmake
++++ b/src/python/config/ModuleDefine.cmake
+@@ -55,7 +55,6 @@ function(PYIMATH_ADD_LIBRARY_PRIV libname)
+   add_library(${PROJECT_NAME}::${libname} ALIAS ${libname})
+ 
+   install(TARGETS ${libname}
+-    EXPORT ${PROJECT_NAME}
+     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+-- 
+2.39.2
+
diff -Nru imath-3.1.9/debian/patches/series imath-3.1.9/debian/patches/series
--- imath-3.1.9/debian/patches/series	1970-01-01 01:00:00.000000000 +0100
+++ imath-3.1.9/debian/patches/series	2024-01-22 17:53:42.000000000 +0100
@@ -0,0 +1 @@
+0001-src-python-config-ModuleDefine.cmake-do-not-install-.patch
