fenics team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

On 05/04/11 18:44, Anders Logg wrote:
> On Tue, Apr 05, 2011 at 11:49:05AM +0200, Harish Narayanan wrote:
>> On 4/5/11 8:39 AM, Anders Logg wrote:
>>> We're making good progress with collecting the copyright forms and
>>> should soon be able to make the switch to LPGL.
>>>
>>> A couple of points I'd like to make:
>>>
>>> 1. When someone submits patches, maintainers first need to ask
>>> contributors to sign the two forms. Otherwise, we risk having to run
>>> after people we don't know to sign the forms later.
>>>
>>> 2. FEniCS Apps should have the exact same license as the rest of the
>>> code, simply because that enables copying of code from Apps to Core.
>>> It is natural (and desirable) that some of the code developed as part
>>> of an App moves into DOLFIN if it's found that code may be useful to
>>> other projects.
>>>
>>> This means CBC.Solve needs to either use the LPGL, or, if Harish still
>>> objects, be removed from FEniCS Apps or CBC.Twist removed from
>>> CBC.Solve.
>>
>> I understand and mostly agree with what you are saying.
>>
>> The only strong opinion I have is about cbc.twist. Not to be difficult,
>> but I genuinely feel its goals---being a test-bed to learn and educate
>> others about mechanics---are best served if any further projects built
>> upon it are developed in an open fashion. To enforce this, I would like
>> it to remain GPL.
> 
> I understand, but it's a complication if we can't copy code between
> the projects.
> 
> Other opinions?
> 

I think that requiring LGPL for apps is a bit draconian. There will be
apps that will never have code incorporated into projects, and there may
be projects that are best served by simply being released into the
public domain. If a developer would like to have their code added to a
project at some point, it would be in their interests to make it LGPL.

Garth

>> I think the easiest solution here is that I split cbc.twist from
>> cbc.solve. This allows the rest of cbc.solve to then be an LGPL FEniCS
>> App, and I have no other qualms about signing the license change forms.
> 
> So it would be an add-on to CBC.Solve? It would be a bit unfortunate
> if we'd have to remove it from CBC.Solve. But perhaps it would be
> fairly easy to implement a new hyperelasticity solver.
> 
> --
> Anders
> 
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