Make mysqlclient an optional dependency

[willprice]

MySQL shouldn't be a core dependency, I've moved it to an extra package which can be installed as pip install pattern[mysql] if users wish to install with mysql support.

[coveralls]

Coverage decreased (-0.8%) to 67.472% when pulling 3b77852 on uob-vil:master into 5b85d99 on clips:master.

[gutomaia]

+1

[zh0uquan]

+1

[kylemcdonald]

thank you. i tried to get pattern running on mac with this:

brew install mysql-client
pip3 install pattern

But I couldn't get it to work. This works though:

pip3 install git+https://github.com/uob-vil/pattern.git

[tuky]

It would be awesome to see this happen! :-)

[Sjoerd82]

Mysql really complicates the installation, as it turns out installing the myssqlclient on a windows machine is non trivial. Any luck on removing this dependency? I've linked some related issues which can all be closed when this is resolved.

[ndvbd]

I get:

File "/usr/lib/python3.10/zipfile.py", line 1267, in init
self._RealGetContents()
File "/usr/lib/python3.10/zipfile.py", line 1334, in _RealGetContents
raise BadZipFile("File is not a zip file")
zipfile.BadZipFile: File is not a zip file

[sanmai-NL]

@tom-de-smedt Can you please merge this or mark the GitHub project as Archived?

[gokulnath-prabakaran-zoomrx]

When will this issue be resolved?