[pypy-dev] speed.pypy.org and mercurial

Dan Villiom Podlaski Christiansen danchr at gmail.com
Thu Dec 16 21:05:05 CET 2010

On 16 Dec 2010, at 20:27, Alex Gaynor wrote:

> On Thu, Dec 16, 2010 at 2:22 PM, Maciej Fijalkowski  
> <fijall at gmail.com>wrote:
>> On Thu, Dec 16, 2010 at 12:14 PM, Dan Villiom Podlaski Christiansen
>> <danchr at gmail.com> wrote:
>>> Please note that any use of the Python API means that the entire
>>> application is covered by the GPL.
>> How is it even technically possible? It does not link against
>> mercurial and GPL specifically excludes anything about *running* your
>> software.
> Because the term "link" is totally meaningless in the context of  
> Python
> code.  Some people say this means it's impossible for Python to  
> invoke that
> clause of the GPL, others say it means `import`ing something invokes  
> it.
> There's no correct answer.

Well, some people believe that any use of a GPL API constitutes a  
derivative work, and is thus covered by it. Mercurial even went  
through a licence change from GPLv2 to GPLv2+ to get rid of this  
ambiguity. See the links below; otherwise the convert extension (which  
is distributed with Mercurial) might be in violation of its own licence.



Anyway, as long as your code is open, people are unlikely to care  
enough to do anything about it…


Dan Villiom Podlaski Christiansen
danchr at gmail.com

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