[SOLVED] Re: [PyQt] Can't load custom python plugins in qt4 designer

[Michael Thompson]

2009/6/2 David Boddie <dboddie at trolltech.com>

> On Tuesday 02 June 2009, Michael Thompson wrote:
>
> > I ran an strace and grepped for plugins and python and noticed the
> following
> > possibly missing files.
>
> Ah, I should have thought of using strace...
>
> > stat64("/usr/share/doc/python-qt4-doc/examples/designer/plugins/PyQt4",
> > 0xbf9f4f74) = -1 ENOENT (No such file or directory)
> > open("/usr/share/doc/python-qt4-doc/examples/designer/plugins/PyQt4.so",
> > O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
> [...]
> > open("/usr/share/doc/python-qt4-doc/examples/designer/plugins/sip.py",
> > O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
> > open("/usr/share/doc/python-qt4-doc/examples/designer/plugins/sip.pyc",
> > O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
>
> I'm not sure these failures are the cause of the problem. I see the same
> failed calls to open() in my output. However, if you look through the
> output, you should see that some of these files are found in other places,
> such as in the Python installation's site-packages directory.
>
> > I then installed the following additional packages and now it works, so I
> > think there is a missing dependency amongst the list below.
> >
> > sudo apt-get install python-qt-dev python-qt4-dev python-sip4
> > python-sip4-dev
>
> I would be surprised if the python-sip4 package was missing - if I try to
> remove it, apt-get tells me that it will also remove python-qt4, so the
> plugins example wouldn't have run without it. I don't have any of those
> -dev packages installed, so it would be strange if our systems behaved
> differently in this respect.
>
> Could it be that your system was finding an orphaned sip.so library
> somewhere? Did you install Ubuntu from scratch or did you upgrade from a
> previous version?



Turns out there is a dependency on python2.6-dev, specifically /usr/lib/
libpython2.6.so
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