[vtk-developers] Fixing VTK Python Installation

[Sander Niemeijer]

Hi,

On donderdag, aug 11, 2005, at 19:24 Europe/Amsterdam, Brad King wrote:

> 1.) If more than one version of VTK is installed (say 5.0 and 5.2) how 
> can the desired version be selected by python?  In tcl one can write
>
>   package require -exact vtk 5.0
>
> or
>
>   package require -exact vtk 5.2
>
> and the proper version will be loaded.  This is because things get 
> installed to PREFIX/lib/vtk-<version> and PREFIX/lib is automatically 
> added to the TCLLIBPATH by Tcl.  The pkgIndex.tcl file installed for 
> each VTK version specifies that it provides a certain version of VTK.
>
> What is the python equivalent for this?  If everything goes in 
> site-packages how can multiple versions be installed?

You might want to have a look at the way wxPython handles this. About a 
year ago they added a way to keep multiple versions of wxPython 
installed and select/load the appropriate version at runtime:

http://wxpython.org/MigrationGuide.html#multi-version-installs
http://cvs.wxwidgets.org/viewcvs.cgi/wxWidgets/wxPython/wxversion/

Best regards,
Sander