echo https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.3.tar.gz >> requirements.txt
(env) aruns (master *) marr$ sudo -H pip3 install -r ./requirements.txt 
[sudo] password for aruns: 
Collecting https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.4.tar.gz (from -r ./requirements.txt (line 1))
  Using cached https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.4.tar.gz
Collecting https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.3.tar.gz (from -r ./requirements.txt (line 2))
  Using cached https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.3.tar.gz
Installing collected packages: mysql-connector-python
  Running setup.py install for mysql-connector-python ... error
    Complete output from command /usr/bin/python3.4 -u -c "import setuptools, tokenize;__file__='/tmp/pip-2oblbn91-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-1ynx1_xu-record/install-record.txt --single-version-externally-managed --compile:
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: -c --help [cmd1 cmd2 ...]
       or: -c --help-commands
       or: -c cmd --help
    
    error: option --single-version-externally-managed not recognized
    
    ----------------------------------------
Command "/usr/bin/python3.4 -u -c "import setuptools, tokenize;__file__='/tmp/pip-2oblbn91-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-1ynx1_xu-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-2oblbn91-build/
aruns$