install_snipets

Instalation of PyForms: (not from pypi)
pip3 install QScintilla

git clone https://github.com/UmSenhorQualquer/pyforms.git
cd pyforms
pip install . --upgrade

pip install git+https://github.com/UmSenhorQualquer/pysettings.git --upgrade
pip install git+https://UmSenhorQualquer@bitbucket.org/fchampalimaud/logging-bootstrap.git --upgrade

# install pyqt5 globally
sudo apt-get install python3-pyqt5
sudo apt install pyqt5-dev

Installation of OpenCV on Ubuntu (I am using Ubuntu 16.04):
https://www.learnopencv.com/install-opencv3-on-ubuntu/


cv2 link to the virtualenv:

############ For Python 2 ############
cd ~/.virtualenvs/lib/python2.7/site-packages
ln -s /usr/local/lib/python2.7/dist-packages/cv2.so cv2.so
  
############ For Python 3 ############
cd ~/.virtualenvs/lib/python3.6/site-packages
ln -s /usr/local/lib/python3.6/dist-packages/cv2.cpython-36m-x86_64-linux-gnu.so cv2.so

After that in virtualenv to prevent imports error between PyQt5 and cv2:
pip install opencv-python