[vtk-developers] python install prefix in setup.py

[David Gobbi]

Hi Sebastien,

We did come to a conclusion on the install discussion, but what we had 
decided on is not going
to help you. Our first conclusion was that VTK_PYTHON_SETUP_ARGS should 
become a
non-advanced and better documented.  Our second conclusion is that we 
need to add some way to allow
people to have multiple installed versions of VTK in site-packages at 
once.  Neither of these is relevant.

I'm guessing that you need to know where site-packages is so that you 
can set the PYTHONPATH
automatically.  So VTK's CMake will have to figure out how setup.py 
calculates the path to site-packages,
and will then create VTK_PYTHON_MODULE_DIRS in UseVTK.cmake so that 
other projects
can find it.

Is that the kind of thing you are looking for?

 - David



Sebastien BARRE wrote:

> Hello Guys,
>
> Any progress on that python install discussion ?
>
> Many of my dashboards are failing for external projects using 
> installed VTK's because it's just very hard to find where the Python 
> stuff is.
> On Windows for example, I can more or less rely on:
>     vtkinstalldir/lib/site-packages
> but on Unix, it's worse:
>     vtkinstalldir/lib/python2.4/site-packages
> there is now a python2.4 in the way to 'site-packages'. My dashboards 
> are automated, how can I figure out that there is a python2.4 
> directory there ? Right now, my workaround is to check if we are on 
> Win32 or not, then check if PYTHON_EXECUTABLE is set, and launch it to 
> get the python version, etc. Not so practical.
>
> Thanks
>
> -- 
> Sebastien Barre
>
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