versioneer missing from all files in requirements dir leads to ModuleNotFoundError when installing from pip

[ReagentX]

Description

versioneer is missing from all files in requirements dir, which leads to ModuleNotFoundError when installing via pip.

Code to reproduce

pip intall Cartopy

Traceback

Collecting Cartopy
  Downloading https://files.pythonhosted.org/packages/e5/92/fe8838fa8158931906dfc4f16c5c1436b3dd2daf83592645b179581403ad/Cartopy-0.17.0.tar.gz (8.9MB)
    100% |████████████████████████████████| 8.9MB 2.7MB/s
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  Complete output from command /Users/chris/Dropbox/Code/Python/purple_air_api/venv/bin/python3 /Users/chris/Dropbox/Code/Python/purple_air_api/venv/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /var/folders/41/39__8bps2b7cncsp6kkp4x8c0000gn/T/tmpa5wa1xdn:
  Traceback (most recent call last):
    File "/Users/chris/Dropbox/Code/Python/purple_air_api/venv/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 207, in <module>
      main()
    File "/Users/chris/Dropbox/Code/Python/purple_air_api/venv/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 197, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "/Users/chris/Dropbox/Code/Python/purple_air_api/venv/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 54, in get_requires_for_build_wheel
      return hook(config_settings)
    File "/private/var/folders/41/39__8bps2b7cncsp6kkp4x8c0000gn/T/pip-build-env-_svx4xy6/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 115, in get_requires_for_build_wheel
      return _get_build_requires(config_settings, requirements=['wheel'])
    File "/private/var/folders/41/39__8bps2b7cncsp6kkp4x8c0000gn/T/pip-build-env-_svx4xy6/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 101, in _get_build_requires
      _run_setup()
    File "/private/var/folders/41/39__8bps2b7cncsp6kkp4x8c0000gn/T/pip-build-env-_svx4xy6/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 85, in _run_setup
      exec(compile(code, __file__, 'exec'), locals())
    File "setup.py", line 36, in <module>
      import versioneer
  ModuleNotFoundError: No module named 'versioneer'

Full environment definition

Operating system

MacOS 10.14.2 (18C54)

Cartopy version

N/A

conda list

pip list

astroid==2.1.0
certifi==2018.11.29
chardet==3.0.4
cycler==0.10.0
docopt==0.6.2
geographiclib==1.49
geopy==1.18.1
idna==2.8
isort==4.3.4
kiwisolver==1.0.1
lazy-object-proxy==1.3.1
matplotlib==3.0.2
mccabe==0.6.1
numpy==1.16.1
pandas==0.24.0
pylint==2.2.2
pyparsing==2.3.1
python-dateutil==2.7.5
pytz==2018.9
requests==2.21.0
requests-cache==0.4.13
six==1.12.0
thingspeak==0.4.1
urllib3==1.24.1
wrapt==1.10.11

[akrherz]

see #1270

[QuLogic]

Yes, this is a duplicate of #1270.