Fix ./setup develop

[dmpop]

./setup develop throws the following error:

running develop
running egg_info
creating src/sonnenhut.egg-info
writing src/sonnenhut.egg-info/PKG-INFO
writing dependency_links to src/sonnenhut.egg-info/dependency_links.txt
writing requirements to src/sonnenhut.egg-info/requires.txt
writing top-level names to src/sonnenhut.egg-info/top_level.txt
writing manifest file 'src/sonnenhut.egg-info/SOURCES.txt'
reading manifest file 'src/sonnenhut.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'travis_requirements.txt'
warning: no previously-included files matching '*.py[cod]' found anywhere in distribution
warning: no previously-included files matching '__pycache__' found anywhere in distribution
warning: no previously-included files matching '*.so' found anywhere in distribution
warning: no previously-included files matching '*.dylib' found anywhere in distribution
no previously-included directories found matching 'docs/build'
writing manifest file 'src/sonnenhut.egg-info/SOURCES.txt'
running build_ext
Creating /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages/sonnenhut.egg-link (link to src)
Adding sonnenhut 1.3.0 to easy-install.pth file
Installing sonnenhut script to /home/dmpop/GitHub/sonnenhut/.env/bin

Installed /home/dmpop/GitHub/sonnenhut/src
Processing dependencies for sonnenhut==1.3.0
Searching for bottle
Reading https://pypi.python.org/simple/bottle/
Downloading https://pypi.python.org/packages/bd/99/04dc59ced52a8261ee0f965a8968717a255ea84a36013e527944dbf3468c/bottle-0.12.13.tar.gz#md5=d2fe1b48c1d49217e78bf326b1cad437
Best match: bottle 0.12.13
Processing bottle-0.12.13.tar.gz
Writing /tmp/easy_install-3_wx506k/bottle-0.12.13/setup.cfg
Running bottle-0.12.13/setup.py -q bdist_egg --dist-dir /tmp/easy_install-3_wx506k/bottle-0.12.13/egg-dist-tmp-clgxhxab
warning: no files found matching 'LICENSE.txt'
zip_safe flag not set; analyzing archive contents...
__pycache__.bottle.cpython-36: module references __file__
creating /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages/bottle-0.12.13-py3.6.egg
Extracting bottle-0.12.13-py3.6.egg to /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages
Adding bottle 0.12.13 to easy-install.pth file
Installing bottle.py script to /home/dmpop/GitHub/sonnenhut/.env/bin

Installed /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages/bottle-0.12.13-py3.6.egg
Searching for pyowm
Reading https://pypi.python.org/simple/pyowm/
Downloading https://pypi.python.org/packages/c3/5a/69f178e564b5dbf1440d40be12fb6f308344ea4de240469bd11387f97a51/pyowm-2.6.1-py3.6.egg#md5=d19738c8d8c5fc90c0ab2263c4c3e887
Best match: pyowm 2.6.1
Processing pyowm-2.6.1-py3.6.egg
Moving pyowm-2.6.1-py3.6.egg to /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages
Adding pyowm 2.6.1 to easy-install.pth file

Installed /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages/pyowm-2.6.1-py3.6.egg
Searching for pytz
Reading https://pypi.python.org/simple/pytz/
Downloading https://pypi.python.org/packages/d0/e1/aca6ef73a7bd322a7fc73fd99631ee3454d4fc67dc2bee463e2adf6bb3d3/pytz-2016.10.tar.bz2#md5=88b1d6c50c764579292edce3493c8a3a
Best match: pytz 2016.10
Processing pytz-2016.10.tar.bz2
Writing /tmp/easy_install-x41yc84w/pytz-2016.10/setup.cfg
Running pytz-2016.10/setup.py -q bdist_egg --dist-dir /tmp/easy_install-x41yc84w/pytz-2016.10/egg-dist-tmp-615juk2m
Moving pytz-2016.10-py3.6.egg to /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages
Adding pytz 2016.10 to easy-install.pth file

Installed /home/dmpop/GitHub/sonnenhut/.env/lib/python3.6/site-packages/pytz-2016.10-py3.6.egg
Searching for astral
Reading https://pypi.python.org/simple/astral/
Downloading https://pypi.python.org/packages/a4/d6/c309f266677372964c6002a56a7bec2a90875338a71325e20b24d6d1e187/astral-1.4.zip#md5=140499d213a234cb216e6b7fe36ee3c7
Best match: astral 1.4
Processing astral-1.4.zip
Writing /tmp/easy_install-feq_2yav/astral-1.4/setup.cfg
Running astral-1.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-feq_2yav/astral-1.4/egg-dist-tmp-1g9iwiv8
Traceback (most recent call last):
  File "src/astral.py", line 75, in <module>
ModuleNotFoundError: No module named 'pytz'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 157, in save_modules
    yield saved
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 198, in setup_context
    yield
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 255, in run_setup
    DirectorySandbox(setup_dir).run(runner)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 285, in run
    return func()
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 253, in runner
    _execfile(setup_script, ns)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 47, in _execfile
    exec(code, globals, locals)
  File "/tmp/easy_install-feq_2yav/astral-1.4/setup.py", line 11, in <module>
    :rtype: list
  File "src/astral.py", line 77, in <module>
ImportError: The astral module requires the pytz module to be available.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./setup.py", line 38, in <module>
    'Topic :: Utilities'],
  File "/usr/lib64/python3.6/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/lib64/python3.6/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/develop.py", line 36, in run
    self.install_for_development()
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/develop.py", line 150, in install_for_development
    self.process_distribution(None, self.dist, not self.no_deps)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 747, in process_distribution
    [requirement], self.local_index, self.easy_install
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/pkg_resources/__init__.py", line 851, in resolve
    dist = best[req.key] = env.best_match(req, ws, installer)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/pkg_resources/__init__.py", line 1123, in best_match
    return self.obtain(req, installer)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/pkg_resources/__init__.py", line 1135, in obtain
    return installer(requirement)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 674, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 700, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 881, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 1120, in build_and_install
    self.run_setup(setup_script, setup_base, args)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/command/easy_install.py", line 1106, in run_setup
    run_setup(setup_script, args)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 258, in run_setup
    raise
  File "/usr/lib64/python3.6/contextlib.py", line 100, in __exit__
    self.gen.throw(type, value, traceback)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 198, in setup_context
    yield
  File "/usr/lib64/python3.6/contextlib.py", line 100, in __exit__
    self.gen.throw(type, value, traceback)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 169, in save_modules
    saved_exc.resume()
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 144, in resume
    six.reraise(type, exc, self._tb)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 157, in save_modules
    yield saved
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 198, in setup_context
    yield
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 255, in run_setup
    DirectorySandbox(setup_dir).run(runner)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 285, in run
    return func()
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 253, in runner
    _execfile(setup_script, ns)
  File "/home/dmpop/GitHub/sonnenhut/.env/lib64/python3.6/site-packages/setuptools/sandbox.py", line 47, in _execfile
    exec(code, globals, locals)
  File "/tmp/easy_install-feq_2yav/astral-1.4/setup.py", line 11, in <module>
    :rtype: list
  File "src/astral.py", line 77, in <module>
ImportError: The astral module requires the pytz module to be available.

Running the command again fixes the issue