About libinput license.

Yoshiaki Seko seko.yoshiaki at nttd-mse.com
Fri Jan 17 07:06:16 UTC 2020

Hi Peter

Sorry for late reply.

Thanks for the great advice.
I understand and think your opinion is correct.

Best Regards,

Peter Hutterer <peter.hutterer at who-t.net> wrote:

> On Fri, Dec 20, 2019 at 12:46:00PM +0900, Yoshiaki Seko wrote:
> > Dear libinput Developers
> > 
> > I'm Seko.I have a question.
> > 
> > We want to use libinput.
> > I see your  HP and I think libinput is MIT License.
> > https://wayland.freedesktop.org/libinput/doc/latest/faqs.html#is-libinput-gpl-licensed
> > 
> > But I think below module is used GPL codes, because the text is described below in the module header.
> > "Modelled after Linux' lib/ratelimit.c by Dave Young
> >  <hidave.darkstar at gmail.com>, which is licensed GPLv2."
> > (libinput/1.8.1-r0/libinput-1.8.1/src libinput-util.c ratelimit_test())
> > 
> > So, I'm thinking that the GPL is propagating, isn't it a problem?
> I've looked at the referenced lib/ratelimit.c and I think we can justifiably
> say that "modelled after" merely means "got the inspiration from". The API
> differs and the implementation differs but I do not think that there is
> sufficient similarity to claim one is a derivative of the other. The GPL
> does not propagate here IMO.
> Cheers,
>    Peter, not a lawyer.

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