Re: [Frescobaldi] convert-ly don't work in 3.0.1 in Windows

[Urs Liska]

Am 10.09.2018 um 19:07 schrieb Urs Liska:
> Am 10. September 2018 18:29:32 MESZ schrieb Federico Bruni <address@hidden>:
> > Hi Anders
> >
> > I confirm the problem on Windows 7.
> > Detailed versions:
> >
> > Frescobaldi: 3.0.1
> > Python: 3.5.2
> > python-ly: 0.9.4
> > Qt: 5.8.0
> > PyQt: 5.8.1
> > sip: 4.19.1
> > poppler: 0.52.0
> > python-poppler-qt: 0.24.2
> > OS: Windows-7-6.1.7601-SP1
> >
> > I wonder if any Windows user using Frescobaldi 3 can confirm it. That's
> >
> > why I've added lilypond-user in Cc.
> >
> > My **guess** is that Frescobaldi is trying to use the bundled python3
> > to run convert-ly (which is a LilyPond file) and this is going to fail.
> >
> > It does even on Linux:
> >
> > $ python3 /usr/bin/convert-ly /home/fede/tmp/lilypond/converting.ly
> > Traceback (most recent call last):
> >   File "/usr/bin/convert-ly", line 52, in <module>
> >     import lilylib as ly
> >   File "/usr/share/lilypond/2.19.82/python/lilylib.py", line 238
> >     print log[0]
> >             ^
> > SyntaxError: Missing parentheses in call to 'print'. Did you mean
> > print(log[0])?
> >
> > The best fix would be make LilyPond convert-ly work on python3 as
> > well...
> > Even though Frescobaldi should handle better this kind of errors and at
> >
> > least print some information instead of being silent.
> This is exactly a spot I'm currently working on (how Frescobaldi handles 
> external jobs). I will have a look into how convert-ly is called too.

OK, I have put my hands on the code that calls convert-ly 
(https://github.com/wbsoft/frescobaldi/commit/ab9cda16d96564a86fd2580c05d3ec86c63b7e51) 
.

It turns out that indeed Frescobaldi just invokes 'convert-ly' (with the 
absolute path, according to the current LilyPond version) without any 
notion of Python2/Python3.

On Linux this is a shell script that explicitly starts the Python 
bundled with LilyPond,

I don't know what exactly happens with this on Windows, but I think it 
*should* work, since it relies on what is bundled with LilyPond, not the 
Python3 from Frescobaldi.

I think I'd need more information to give a better opinion.
Best
Urs

> Urs
>
> > Best
> > Federico
> >
> > In the meanwhile, you may install the latest Python 2.7 (put a tick to
> > add python to PATH) and run convert-ly in PowerShell. See for example:
> >
> >
> > PS C:\Users\fede\Documents> python.exe 'C:\Program Files
> > (x86)\LilyPond\usr\bin\convert-ly.py' .\convert-test.ly
> > convert-ly.py (GNU LilyPond) 2.19.28
> >
> > convert-ly.py: Processing `.\convert-test.ly'...
> > Applying conversion: 2.17.0, 2.17.4, 2.17.5, 2.17.6, 2.17.11, 2.17.14,
> > 2.17.15, 2.17.18, 2.17.19, 2.17.20, 2.17.2
> > .27, 2.17.29, 2.17.97, 2.18.0, 2.19.2, 2.19.7, 2.19.11, 2.19.16,
> > 2.19.22, 2.19.24, 2.19.28
> >
> >
> > \version "2.19.28"
> >
> > {
> >   \tuplet 3/2 { c8 d e }
> >
> > }
> >
> >
> >
> >
> > Il giorno dom 9 set 2018 alle 9:36, address@hidden ha
> > scritto:
> > > Hello,
> > >
> > > I just updated from version 2 to the latest version 3 for Windows
> > > (Frescobaldi.Setup.3.0.0-2.exe)
> > > When I try to use convert-ly nothing happens!
> > >
> > > The dialog shows up as usual, with the current version and the new
> > > version, but that's it!
> > >
> > > If I run convert.ly in the Lilypond bin directory then it works...
> > >
> > >
> > >
> > > What's wrong?
> > >
> > > // Anders
> > > --
> > > Frescobaldi homepage: http://www.frescobaldi.org/
> > > Mailing list: http://groups.google.com/group/frescobaldi
> > > Issue tracker: https://github.com/wbsoft/frescobaldi/issues
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