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kalkun-sms / Kalkun

Open Source Web based SMS Manager
https://kalkun.sourceforge.io/
GNU General Public License v2.0
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License issue: `GPL-3-or-later` not compatible with `GPL-2-only` #505

Closed tenzap closed 10 months ago

tenzap commented 1 year ago

Currently kalkun is licensed under GPL-3-or-later. However, kalkun is closely bound to Gammu which is GPL-2-only. Moreover, some of the code/files in kalkun is also under GPL2 license.

For example: application/plugins/sms_to_twitter/libraries/Epi.php application/plugins/sms_to_twitter/libraries/Twitter.php application/sql/mysql/pbk_gammu.sql application/sql/pgsql/pbk_gammu.sql application/sql/sqlite/pbk_gammu.sql

The problem is that these licenses (GPL-3-or-later & GPL-2-only) are actually not compatible as per https://www.gnu.org/licenses/gpl-faq.en.html#AllCompatibility

I think Kalkun was wrongly licensed under GPL-3-or-later because Gammu's license doesn't permit that. I suggest to relicense kalkun under GPL-2-or-later.

I would agree with this, what do you think @kingster, @back2arie, @pandigresik ?

kingster commented 10 months ago

I think we need the agreement of @back2arie in order to re-licence to GPL-2-or-later. @back2arie Maybe you could share your views since you are the original author of project?

back2arie commented 10 months ago

Dear All,

Yes, let's do that. I guess we can't help it since currently we are "bound" to Gammu. I was not aware of the incompatibilities before, thanks for pointing that out.