Error when installling python-colour 0.1.5-1 from AUR

Missing version information: running './autogen.sh'...
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 154, in save_modules
    yield saved
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 195, in setup_context
    yield
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 250, in run_setup
    _execfile(setup_script, ns)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 45, in _execfile
    exec(code, globals, locals)
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/setup.py", line 17, in <module>
    from setuptools import setup
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/d2to1/util.py", line 204, in cfg_to_args
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/d2to1/util.py", line 439, in wrap_commands
  File "/usr/lib/python3.6/site-packages/setuptools/dist.py", line 593, in get_command_list
    cmdclass = ep.resolve()
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2411, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
ModuleNotFoundError: No module named 'tasks'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "setup.py", line 64, in <module>
    d2to1=True
  File "/usr/lib/python3.6/site-packages/setuptools/__init__.py", line 128, in setup
    _install_setup_requires(attrs)
  File "/usr/lib/python3.6/site-packages/setuptools/__init__.py", line 123, in _install_setup_requires
    dist.fetch_build_eggs(dist.setup_requires)
  File "/usr/lib/python3.6/site-packages/setuptools/dist.py", line 455, in fetch_build_eggs
    replace_conflicting=True,
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 866, in resolve
    replace_conflicting=replace_conflicting
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1146, in best_match
    return self.obtain(req, installer)
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1158, in obtain
    return installer(requirement)
  File "/usr/lib/python3.6/site-packages/setuptools/dist.py", line 522, in fetch_build_egg
    return cmd.easy_install(req)
  File "/usr/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 673, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 699, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/usr/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 882, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/usr/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 1150, in build_and_install
    self.run_setup(setup_script, setup_base, args)
  File "/usr/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 1136, in run_setup
    run_setup(setup_script, args)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 253, in run_setup
    raise
  File "/usr/lib/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 195, in setup_context
    yield
  File "/usr/lib/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 166, in save_modules
    saved_exc.resume()
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 141, in resume
    six.reraise(type, exc, self._tb)
  File "/usr/lib/python3.6/site-packages/six.py", line 692, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 154, in save_modules
    yield saved
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 195, in setup_context
    yield
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 250, in run_setup
    _execfile(setup_script, ns)
  File "/usr/lib/python3.6/site-packages/setuptools/sandbox.py", line 45, in _execfile
    exec(code, globals, locals)
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/setup.py", line 17, in <module>
    from setuptools import setup
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/d2to1/util.py", line 204, in cfg_to_args
  File "/tmp/easy_install-azagkkvv/d2to1-0.2.12.post1/d2to1/util.py", line 439, in wrap_commands
  File "/usr/lib/python3.6/site-packages/setuptools/dist.py", line 593, in get_command_list
    cmdclass = ep.resolve()
  File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2411, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
ModuleNotFoundError: No module named 'tasks'