Bug#893729: sympy FTBFS: python3-distutils is now a separate package

[Rebecca N. Palmer]

Source: sympy
Severity: serious
Control: tags -1 patch
X-Debbugs-Cc: debian-python at lists.debian.org

python3-distutils has been moved out of python3.6 (as of 3.6.5~rc1-2), 
so if you need it, please build-depend on it.  (Or python3-setuptools, 
given that this looks like it might prefer that.)

(Has anyone checked whether there are more of these?)

dpkg-buildpackage: info: source package sympy
dpkg-buildpackage: info: source version 1.1.1-4
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Yaroslav Halchenko 
<debian at onerussian.com>
dpkg-buildpackage: info: host architecture amd64
  dpkg-source --before-build sympy-1.1.1
  fakeroot debian/rules clean
dh  clean --with python2,python3 --buildsystem=pybuild
    debian/rules override_dh_auto_clean
make[1]: Entering directory 
'/home/rnpalmer/Debian/builds/stackbuild/sympy-1.1.1'
dh_auto_clean
I: pybuild base:217: python2.7 setup.py clean
/usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown 
distribution option: 'install_requires'
   warnings.warn(msg)
running clean
I: pybuild base:217: python3.6 setup.py clean
Traceback (most recent call last):
   File "setup.py", line 46, in <module>
     from setuptools import setup, Command
ModuleNotFoundError: No module named 'setuptools'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
   File "setup.py", line 49, in <module>
     from distutils.core import setup, Command
ModuleNotFoundError: No module named 'distutils'
E: pybuild pybuild:330: clean: plugin distutils failed with: exit 
code=1: python3.6 setup.py clean
dh_auto_clean: pybuild --clean -i python{version} -p 3.6 returned exit 
code 13
make[1]: *** [debian/rules:29: override_dh_auto_clean] Error 25
make[1]: Leaving directory 
'/home/rnpalmer/Debian/builds/stackbuild/sympy-1.1.1'
make: *** [debian/rules:10: clean] Error 2
dpkg-buildpackage: error: fakeroot debian/rules clean subprocess 
returned exit status 2