[openlp-dev] Relicensing as GPLv3+

[Bastian Germann]

I noticed the issue with pyenchant as well. Therefore I made it an
optional dependency in my "setup" branch.

The pymediainfo package is what is used by all major distributions,
including Debian and Fedora. The maintainer and GitHub URL changed over
time. Maybe this is what you mean. The MediaInfo package by laodifang
seems to be abandoned and not used by any distro. pymediainfo has the
additional advantage of supporting libmediainfo.

I created a Debian python-vlc package at
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=887565. Maybe you can
get your Debian sponsor to sponsor it as well. I already reverted the
removal in the setup branch.

For a painless installation on Win/Mac via PyPI
(https://blueprints.launchpad.net/openlp/+spec/publish-openlp-on-pypi)
the PyICU dependency would need to be replaced. OpenLP uses its
collation support which Babel should be a good replacement for. I would
work on this if you think that is a good idea.

Am 11.10.18 um 18:09 schrieb Raoul Snyman via openlp-dev:
>> Relicensing means some dependencies cannot be used anymore because they
>> are (L)GPLv2 only, which can be resolved by replacing them (pyxdg; done
>> in a merge request) or relicensing them as well (pysword). I guess as
>> pysword's maintainer Thomas Groth is also an OpenLP developer this will
>> work out well.
> 
> This highlights the work you've been doing on the various dependencies
> of OpenLP. We have some practical issues with some of our dependencies,
> and we need to get them sorted out.
> 
> For instance, I know that pyenchant is (a) not Windows (64-bit)
> compatible, and (b) has been discontinued. This means we need to find a
> replacement.
> 
> One of the issues I noticed when I initially investigated replacing our
> mediainfo wrapper with pymediainfo is that there are two different
> Python wrappers for mediainfo, and the last time I checked one was
> packaged in Debian, and a different one was packaged in Fedora. We need
> to make sure that we're not getting them confused.
> 
> Another dependency is the VLC Python library. We currently bundle it
> with OpenLP because when we started using it, it was in neither the
> Debian nor the Fedora repositories. This will have to be in both Fedora
> and Debian before we can remove the bundled library.
> 
> I can't remember off the top of my head if we have any other
> dependencies that we're bundling or that are problematic, but if anyone
> else is aware of them, let's discuss it now.
> 
> 
>> I would suggest using GPLv3+ over GPLv3 only because if you sometime
>> want to use a GPLv4 licensed program, you would have to relicense again.
>> That is why the FSF suggests using the "or later" clause.
> 
> Yes, this is what I was thinking of doing.
> 
>