[Interest] Qt Creator licensing for companies with Qt Commercial developers
Andy
asmaloney at gmail.com
Tue Mar 31 15:46:45 CEST 2020
> "This is at the moment not listed as an allowed case..."
And this again is here the Qt company is digging it's own grave.
What constitutes a "product"? If a company has one team working on an open
source library and another team using it in a proprietary application -
what then? What if an internal tool uses some code or a library from
proprietary application? What if...
Even a solo developer needs to hire a lawyer before touching anything
Qt-related.
Once you start trying to codify all the different scenarios in your
licensing, it becomes toxic and people will avoid it
---
Andy Maloney // https://asmaloney.com
twitter ~ @asmaloney <https://twitter.com/asmaloney>
On Tue, Mar 31, 2020 at 9:36 AM Tuukka Turunen <tuukka.turunen at qt.io> wrote:
>
> Hi,
>
> The point of the "Prohibited combination" is to prevent a company or a
> chain of companies (like in a typical subcontracting scenario) from making
> part of the product with non-paid Qt and part with paid. Qt being as
> defined in the commercial license agreement, i.e. including tools and
> framework. This was what the person initiating this mail thread asked
> about. I do agree that it gets complex when one starts including items
> created by an independent third party. This is at the moment not listed as
> an allowed case, even though it is not something we specifically aimed to
> prevent.
>
> Yours,
>
> Tuukka
>
> On 31.3.2020, 15.03, "Interest on behalf of Giuseppe D'Angelo via
> Interest" <interest-bounces at qt-project.org on behalf of
> interest at qt-project.org> wrote:
>
> On 3/31/20 1:22 PM, Tuukka Turunen wrote:
> > For completely independent projects/products this is fine. Note that
> these really should not be same or in practice the same - or in any way
> depending, relating, using etc each other as defined in the license
> agreement.
> >
> > See licensing FAQ question 2.7 athttps://www.qt.io/faq/ and
> License agreement athttps://www.qt.io/terms-conditions/
>
> It is still unclear if the usage of Qt _Creator_ for developing some
> code would cause such code to fall under the restrictions of
> commercial
> licensing.
>
>
> Here's a few scenarios:
>
> 1) I have a Qt commercial license. In my project using commercial Qt I
> want to use a library developed by
>
> 1a) some other team in my company;
> 1b) someone else.
>
> This other library is under a liberal license; does NOT use Qt itself
> in
> any way; but has been developed using Qt Creator (GPL). Can I use it
> in
> my product under the commercial license? Or would it fall under the
> "Prohibited Combination":
>
> > “Prohibited Combination” shall mean any means to (i) use, combine,
> incorporate, link or integrate Licensed Software with any software created
> with or incorporating Open Source Qt, (ii) use Licensed Software for
> creation of any software created with or incorporating Open Source Qt
>
> Does "created with" here extend to GPL Creator?
>
>
>
> 2) Same as 1, but this time with the library using Qt (as in: using
> headers, linking against it). Example: a Qt-based library coming from
> KDE Frameworks, developed using Creator.
>
>
> Thanks,
> --
> Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Senior Software
> Engineer
> KDAB (France) S.A.S., a KDAB Group company
> Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com
> KDAB - The Qt, C++ and OpenGL Experts
>
>
>
> _______________________________________________
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>
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