Bug#936557: freeorion: Python2 removal in sid/bullseye

[Andreas Beckmann]

Followup-For: Bug #936557
Control: severity -1 serious

freeorion now FTBFS in sid:

   debian/rules override_dh_auto_configure
make[1]: Entering directory '/build/freeorion-0.4.8'
dh_auto_configure -- \
        -DBUILD_DOCUMENTATION=off \
        -DBUILD_TUTORIALS=off \
        -DLIB_SUFFIX=/freeorion \
        -DCMAKE_VERBOSE_MAKEFILE=ON \
        -DCMAKE_BUILD_TYPE=RelWithDebInfo
        cd obj-x86_64-linux-gnu && cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_PA
CKAGE_NO_PACKAGE_REGISTRY=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/x86_64-linux-gnu -DBUILD_DOCUMENTATION=off -DBUILD_TUTORIALS=off -DLIB_SUFFIX
=/freeorion -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
-- Build type CMAKE_BUILD_TYPE set to RelWithDebInfo
-- 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
-- Use CCache for Unix Makefiles called with: ccache program  
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.17", minimum required is "2.7") 
CMake Error at /usr/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
  Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS)
  (Required is at least version "2.7")
Call Stack (most recent call first):
  /usr/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake-3.15/Modules/FindPythonLibs.cmake:310 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:197 (find_package)


-- Configuring incomplete, errors occurred!


Andreas