Hi, Sorry for the late reaction, some time ago there were a discussion about Leo in virtualenv.
Now I could test it in Python3, PyQt5 on Kubuntu: Here are the steps (I worked in a folder with write permission '/leo'): 1. Install PyQt5 in the system: sudo aptitude install python3-pyqt5 2. Create the virtual environment with the '--system-site-packages' switch and without pip (I've found this the only way, which worked): pyvenv-3.4 --system-site-packages --without-pip py3-pyqt5 3. Install setuptools and pip into the created environment: wget --no-check-certificate https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py -O ez_setup.py py3-pyqt5/bin/python ez_setup.py --insecure wget --no-check-certificate https://pypi.python.org/packages/source/p/pip/pip-6.0.8.tar.gz#md5=2332e6f97e75ded3bddde0ced01dbda3 tar xzvf pip-6.0.8.tar.gz cd pip-6.0.8 ../py3-pyqt5/bin/python setup.py install cd .. Now you can install what you want in the created environment, without affecting the system. py3-pyqt5/bin/pip install Sphinx 4. From the leo-editor source folder launch Leo with the new interpreter: In my case: /leo/py3-pyqt5/bin/python launchLeo.py Regards Zoltan -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To post to this group, send email to leo-editor@googlegroups.com. Visit this group at http://groups.google.com/group/leo-editor. For more options, visit https://groups.google.com/d/optout.