[kde-community] Qt Licence change in Licensing Policy

[David Jarvie]

On 21 August 2014 14:20:21 BST, Jonathan Riddell <jr at jriddell.org> wrote:
>With the change in Qt licencing from LGPL 2.1 to LGPL 2.1/3/GPL 2 or
>LGPL 3/GPL 2 we can consider getting rid of the clause in our
>licensing policy which stops copying Qt code into KDE Platform.
>
>"Note: code may not be copied from Qt into KDE Platform as Qt is LGPL
>2.1 only which would prevent it being used under LGPL 3 "
>
>I suggest replacing it with this:
>
>"Note: when copying code from Qt into KDE Platform file you must
>include the full Qt licence header in the header of these files and
>you must name each of these files in COPYING-QT along with the
>relevant LGPL licences in the root of the source tree. Note that most
>Qt modules are LGPL 2.1/ 3 but newer ones may be LGPL 3 + GPL 2 and
>this will affect the overall licensing of the module. This can only be
>done with Qt 5.4 or later as ealier versions had more restrictive
>licences. "

It needs to be made clear that LGPL 2.1 only Qt code still can't be copied into KDE.

>I think any files with Qt code in them need to be named so we can
>easily keep track of them as it will cause problems when LGPL 4 comes
>out and Qt hasn't yet changed to it.
>
>Or this may be too faffy for too little gain and we should just keep
>not allowing Qt code in KDE Platform.
--
David Jarvie.
KDE developer.
KAlarm author -- http://www.astrojar.org.UK/kalarm