Bug#946082: should depend on shiboken2

[Tommaso Colombo <acct.debian@tmcl.it>]

Package: libshiboken2-dev
Version: 5.13.2-2
Severity: important

Since PySide 5.13, the CMake files shipped in libshiboken2-dev have a
dependency on the /usr/bin/shiboken2 executable. If the shiboken2 package is
not installed, find_package(Shiboken2) fails in CMake.

Installing shiboken2 fixes the issue.

This breaks the build of packages which build-depend on libshiboken2-dev. For
example:
https://buildd.debian.org/status/fetch.php?pkg=freecad&arch=amd64&ver=0.18.4%2Bdfsg1-1%2Bb1&stamp=1574113872&raw=0

How to reproduce:

$ cat > CMakeFiles.txt
find_package(Shiboken2)
^D

$ cmake -Wno-dev .
-- The C compiler identification is GNU 9.2.1
-- The CXX compiler identification is GNU 9.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Shiboken2Config: Using default python: .cpython-38-x86_64-linux-gnu
CMake Error at /usr/lib/x86_64-linux-
gnu/cmake/Shiboken2-5.13.2/Shiboken2Targets.cmake:75 (message):
  The imported target "Shiboken2::shiboken2" references the file

     "/usr/bin/shiboken2"

  but this file does not exist.  Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/usr/lib/x86_64-linux-gnu/cmake/Shiboken2-5.13.2/Shiboken2Targets.cmake"

  but not all the files it references.

Call Stack (most recent call first):
  /usr/lib/x86_64-linux-
gnu/cmake/Shiboken2-5.13.2/Shiboken2Config.cpython-38-x86_64-linux-gnu.cmake:40
(include)
  /usr/lib/x86_64-linux-gnu/cmake/Shiboken2-5.13.2/Shiboken2Config.cmake:5
(include)
  CMakeLists.txt:1 (find_package)


-- Configuring incomplete, errors occurred!
See also "/tmp/shiboken2/CMakeFiles/CMakeOutput.log".








-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.3.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_USER, TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libshiboken2-dev depends on:
ii  libshiboken2-py3-5.13  5.13.2-2
ii  python3-dev            3.7.5-3

libshiboken2-dev recommends no packages.

libshiboken2-dev suggests no packages.

-- no debconf information