just to let you know: After gathering from the recent thread that the situation with frescobaldi dependencies and conflicting versions of python would be easier to handle with Ubuntu 17, I tried getting it to work on a pristine 17.10 live system – unsucessfully, with another weird bug (?) preventing to build sip from source. Here’s all the details: https://github.com/wbsoft/python-poppler-qt5/issues/14#issuecomment-353697574