Re: Frescobaldi 2.18 install problems on KXStudio

[Colin Campbell]

On 2015-03-11 12:16 AM, Wilbert Berendsen wrote:
> Op Tue, 10 Mar 2015 16:53:03 -0600
> Colin Campbell <address@hidden> schreef:
>
> >   >>> import ly.pkginfo
> > Traceback (most recent call last):
> >     File "<stdin>", line 1, in <module>
> > ImportError: No module named pkginfo
> Strange. There must be an old 'ly' module lying around on your system,
> because pkginfo was already added quite some time ago.
>
> Please, give me the result of:
>
> $ python
> > > > import ly
> > > > ly.__path__
> > > > ly.__file__

Nailed it, Wilbert! It seems that I must be the first person to install 
python-ly as well as Adam Spiers' ly2video. That's a really cool utility 
which takes a .ly project, compiles to MIDI and ultimately gives an AVI 
file with the score scrolling past over the synchronised MIDI.

*********************************************
address@hidden ~$ python
Python 2.7.8 (default, Oct 20 2014, 15:05:19)
[GCC 4.9.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ly
>>> ly.__path__
*['/usr/local/lib/python2.7/dist-packages/ly2video-0.4.1-py2.7.egg/ly']*
>>> ly.__file__
*'/usr/local/lib/python2.7/dist-packages/ly2video-0.4.1-py2.7.egg/ly/__init__.pyc'*
>>>
[1]+  Stopped                 python
address@hidden ~$
*********************************************

Adam's .egg file exists as a .zip and inside the .zip is a folder named 
ly. I'm copying this to the -dev list because it might be wise for the 
LilyPond community to restrict the name ly for core lilypond use only. A 
major strength of LilyPond is the community of supporting and 
supplemental utilities which has grown around LP, but the risk of this 
sort of conflict will probably only grow, especially as "ly" is an 
obvious name for a folder.

@devel: The problem comes from installing python-ly for the new 2.18 
version of Frescobaldi, which makes Frescobaldi look for a folder named 
"ly" outside its own code. It uses the first one it finds on the path, 
opening the possibility that a conflicting version is found first, with 
the result that Frescobaldi errors off.

Cheers,
Colin

-- I've learned that you shouldn't go through life with a catcher's mitt 
on both hands. You need to be able to throw something back. -Maya 
Angelou, poet (1928- )