[Qgis-developer] Deploying Python Plugins that require PostgreSQL drivers

William Kyngesburye woklist at kyngchaos.com
Thu Jan 22 12:25:41 EST 2009

On Jan 22, 2009, at 10:24 AM, Andreas Neumann wrote:

> Hi all,
> I wrote a Python plugin that uses the QSqlDatabase object with  
> PostgreSQL.
> While the deployment works fine on Linux and Windows, I get an error
> message on Mac OS X with an error message "Driver not loaded".
> I am wondering if there are binary frameworks for the PostgreSQL  
> driver
> that can be used with Postgresql and QT - I would like to avoid  
> having to
> install a development environment on each Mac OS X client where I  
> have to
> install the QGIS plugin.
> Anyone knows if such binary drivers for OSX exist and where I could  
> get
> them? How do others deploy such plugins that need PostgreSQL a  
> connection?
> The interesting thing is that the Postgresql connection seems to work
> already in QGIS (for loading spatial tables), it just doesn't work  
> with my
> own plugin.
Are you using prebuilt Qgis binaries? (mine or Tom's all-in-one)  Both  
have libpq bundled in the package, and Qgis handles postgres on its  
own, as far as I know, not with the Qt database driver.  Neither  
binary distribution includes the Qt postgres plugin.

William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>

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