Hi Urs,
   I did now test the instructions on an Ubuntu 16.04 Live system, and it seems 
to work (Frescobaldi is up and running; I didn't test any of the features). 
There's one typo: popller->poppler. My first question would be: what solution 
to using a .desktop file and still use the correct python-ly, but IIUC that's 
already covered by your TODO list. Another item to be covered would be 
configuring MIDI output. I remember that on one of the attempts that I made to 
install I also tried to set up python-portmidi following 
http://frescobaldi.org/download, but that seemed to be a new can of worms and I 
couldn't get it to work (didn't dig deep either).   Best, Simon 

 Am 06-Jan-2018 15:19:32 +0100 schrieb li...@openlilylib.org: 
I have now finished a run-through of installation instructions. As I have once 
more renamed it the link is now 
https://github.com/wbsoft/frescobaldi/wiki/Installing-Frescobaldi-3-on-Linux-(Package-or-Source)

 I'd be glad about feedback:

 * confirmation
 * questions
 * reports about mistakes
 * reports about failures
 * reports/comments about distributions not covered yet.

 Urs

 6. Januar 2018 11:41, li...@openlilylib.org schrieb:

 > 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
 > lilypond-user@gnu.org
 > https://lists.gnu.org/mailman/listinfo/lilypond-user

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