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I understand the switch to copyleft, but the EU's own website explicitly lists GPL licenses as incompatible, in the matrix on this page: https://joinup.ec.euro

I understand the switch to copyleft, but the EU's own website explicitly lists GPL licenses as incompatible, in the matrix on this page: https://joinup.ec.europa.eu/software/page/eupl/eupl-compatible-open-source-licences https://joinup.ec.europa.eu/software/page/eupl/eupl-compatib... Dual-licensing under the EUPL and GPL, with the option to choose either, would be helpful. Otherwise Nodemailer is incompatible with the majority of other copyleft code.

tomprince 10y ago
Looking closer, you can't incorporate GPL code in a EUPL project, but you can incorporate EUPL code in a GPL project. The EUPL explicitly is allowed to be used as part of GPLv2 project, and indirectly as part of a GPLv2 project via the CeCILL v2 licenses which has a similar provision.