[aur-general] Issue python PKGBUILD

[Iyán Méndez Veiga]

> https://github.com/Qiskit/qiskit-aer/commit/d445d0136f61523281fc22f9e20be9c0
> 16e1dd8e looks relevant.
> 
> There's a muparserx package in aur,
> https://aur.archlinux.org/packages/muparserx .
> 
> Try building with that as makedepend or depend ?

Just tried, and still same error. Even if muparserx is installed, it still 
clones the repo during the python setup.py build.