[PyKDE] PyQt application packagers for windows?

Toby Dickenson tdickenson at devmail.geminidataloggers.co.uk
Thu Jan 22 18:18:00 GMT 2004

On Thursday 22 January 2004 14:24, Roberto Alsina wrote:
> I was just wondering. If someone writes a nice, very free (as in BSD or
> public domain) app using PyQt, would it be legal if someone having a
> windows license would pack it into an installer and distribute it?

I dont believe so. The Qt commercial license says "applications must be 
developed using a licensed registered version of 'the software' ".

On Thursday 22 January 2004 16:02, Greg Fortune wrote:
> My understanding from both Phil and Trolltech reps is that this is
> perfectly acceptable.

> The only nit is that you must have a commercial
> license in the first place to write a BSD licensed app.  If you write it
> without having a commercial license, it will automagically be licensed
> under the GPL.

There are two effects at work here. Firstly, you need to distribute it as GPL 
if your application is a 'derived work' of the GPL version of Qt or PyQt. 
Does this apply to you? That has been extensively debated elsewhere, and I 
dont have anything to add to those debates. Here is one alternative point of 

Secondly, there is a clause in the Qt commercial license that refers to 
applications that the licensee has "developed using" the free edition. I dont 
believe that applies to this scenario, because it is not the licensee doing 
the developing.

> I'm kinda curious what people are using to package up Python apps for
> distribution though...


Toby Dickenson

More information about the PyQt mailing list