Re: New information (success report) for Frescobaldi 3 and the Ubuntu 16.04 repositories

[Simon Albrecht]

Hi Urs,

 

thanks a lot, this sounds good. I’ll try it when I’ll have fixed my Ubuntu 16.04…

 

Best, Simon

Am 06-Jan-2018 11:40:55 +0100 schrieb address@hidden:

> Hi all,
>
>  after all the discussion about getting Frescobaldi to run on distributions based on Ubuntu < 17.xx I decided to give it a shot myself.
>
>  TL;DR Frescobaldi *can* be installed on Ubuntu 16.04/Mint 18.3 from its own Git repositories and the Ubuntu package repositories without issues.
>
>  Context/Situation:
>  I freshly installed Linux Mint 18.3.
>  (NOTE: I use a previously existing $HOME directory, but I'm quite sure this doesn't affect the process)
>  Mint 18.3 is based on Ubuntu 16.04 (Mint 19 will be based on Ubuntu 18.04, the next LTS release),
>  and the relevant packages are from the Ubuntu repositories (so no Mint specifics added), which means I assume the behaviour on vanilla Ubuntu 16.04 is the same.
>
>  Commented installation steps:
>
>  # Make sure everything is up-to-date
>  sudo apt update && sudo apt upgrade
>
>  sudo apt install git
>
>  # Install Frescobaldi's primary dependencies
>  sudo apt install python3-pyqt5 python3-pyqt5.qtsvg python3-pyqt5.qtwebkit
>
>  # Obtain the Git repositories
>  # (I *assume* these could instead be downloaded from Github as ZIP files)
>  cd ~
>  mkdir git # this is just my personal base directory for Git repositories
>  cd git
>  git clone https://github.com/wbsoft/python-ly.git python-ly
>  git clone https://github.com/wbsoft/frescobaldi.git frescobaldi
>
>  First try to run Frescobaldi: Invoke python3 with the frescobaldi entry file and add python-ly to the Python search path:
>
>  PYTHONPATH=$PYTHONPATH:~/git/python-ly python3 ~/git/frescobaldi/frescobaldi
>
>  Frescobaldi correctly starts up, but (expectedly) doesn't show the Music View because the Poppler package isn't installed.
>
>  # Install the Poppler bindings from the Ubuntu repositories
>  sudo apt install python3-poppler-qt5
>
>  After that Frescobaldi correctly starts and shows scores both in the Music View and in the SVG View.
>
>  Knowing this one could have installed all dependencies with one single 
>
>  sudo apt install python3-pyqt5 python3-pyqt5.qtsvg python3-pyqt5.qtwebkit python3-poppler-qt5
>
>  ###
>
>  I don't know enough about this and I can't investigate on a "broken" computer, but I have a suspicion.
>  The issue is that we have Qt, an application framework written in C++. Frescobaldi is written in PyQt, which is a set of Qt "bindings" for Python, so Python programs can use the Qt infrastructure. 
>  The point is that all bindings packages (which includes the general PyQt infrastructure and the custom bindings for the Poppler library that is used to display PDF documents) have to be "compiled against" and with the exact versions of Qt and Python that are installed on the system.
>  Generally this is an aspect that should be taken care of by a Linux distribution's package management system, and my latest try indicates that this works correctly with Ubuntu 16.04 (by now?).
>
>  My suspicion is that when using pip (or pip3) for installing the Python packages these relations are in some way incorrect, maybe they interfere with packages installed through APT.
>  Similarly, when using the setup.py script in the Frescobaldi installation directory things seem not to work correctly.
>  Finally it is maybe not clear enough in the instructions that *everything* (i.e. Ubuntu packages and pip) have to be used in their python3 versions.
>
>  So my final recommendation is: Use Ubuntu's packages and install everything through APT, and avoid pip3 or setup.py.
>
>  I will update the Wiki page (https://github.com/wbsoft/frescobaldi/wiki/Installing-Frescobaldi-3-on-Linux-(package-source), note that I have renamed it) and try to make everything as clear as possible. But I wanted to share this result and encourage people using Ubuntu 16.04 to test and verify it.
>
>  Best
>  Urs
>
>  _______________________________________________
>  lilypond-user mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/lilypond-user