> On 20 Jan 2015, at 14:28, Dennis E. Hamilton <dennis.hamil...@acm.org> wrote:
> 
> Louis asks about a dependency on LGPL.
> 
> -- replying below to --
> From: Louis Suárez-Potts [mailto:lui...@gmail.com] 
> Sent: Tuesday, January 20, 2015 07:05
> To: dev@openoffice.apache.org
> Subject: Re: [DISCUSS] Qt as a replacement for VCL
> 
> [ ... ]
> 
> Indeed, thanks. But let me get this straight. The Qt license, which for us 
> would be LGPL, is not an obstacle? (I know you described a possible usage 
> that did not seem to transgress license. But we should need to be rather 
> careful here.)
> 
> <orcmid>
>   Yuri had intentionally stayed away from the license question and 
>   simply described his impression of Qt in terms of technology.
>     However, I do believe that having Qt in place of VCL would be 
>   very serious (although allowing Qt under VCL as an *option* is different).  
> 
>   I believe the governing conditions in the Apache Project Maturity Model 
>   (https://wiki.apache.org/incubator/ApacheProjectMaturityModel) are CD20, 
>   CD30, and especially LC20.
>      Going to Qt would be more than a requirement for using the compiled 
>   code, it would also be a requirement for being able to compile the code.
>   In the case of writing aids that are made available with AOO binaries 
>   (or as extensions), there is no dependency concerning licensed material 
>   at the AOO source-code level.  The license accompanies the extension, 
>   but the extension's usage at the AOO level is indifferent and the 
>   extensions are replaceable.  Recall the project was very careful about
>   that.


Yes. That was what I had in mind regarding Qt for extensions. Ie, for add on 
applications that essentially operated after AOO compiled. 
> 
>   Relying on Qt, even as a redistributable shared library obtained from the 
>   Qt project, makes it not possible to build AOO without that dependency, 
>   and it would permeate the APIs and source-code architecture everywhere.  
>   Apart from the effort required to do that, I think that is a serious 
>   intrusion of an LGPL dependency into the entire project.  

That was my impression.
> 
>   I think there is an open question about sliding Qt under VCL as simply a 
>   platform adaptation.

Exactly.

>  My question to Yuri was about what he knew concerning 
>   lifecycle management in handling that.  I believe that remains to be 
>   explored.  That might be someone's itch to scratch, but I don't think it 
>   should distract the project at this point.  I think there are many other 
>   pressing matters that require someone with both an itch and the means to 
>   scratch it.

Okay.
> 
>   I also think there is some sort of confusion of Qt with respect to Webkit.
>   I am not certain what that is.  However, to the degree one is interested
>   in moving toward light-weight GUIs that take advantage of the HTML5, CSS,
>   and JavaScript support on devices and the cloud, there seem to be more 
>   direct avenues that one might consider for AOO, although I for one am
>   completely ignorant of what that would disrupt in the current AOO 
>   architecture and source-code structures.

I for one would suggest that those of us wanting to use WebKit for building 
interesting apps consider Corinthia ;-)


> 
>   Squirrel !;<).
> </orcmid>
> 
> 
Thanks, Dennis
Louis

PS nothing stops one from building AOO on Qt *outside* of Apache, of course, 
but then why? (Besides driving the LO crowd crazy with confusion.)
> 
> 
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