On Mon, May 23, 2022 at 11:22:36PM +0200, Thomas Gleixner wrote: > On Fri, Oct 29 2021 at 11:44, Luis Chamberlain wrote: > > --- /dev/null > > +++ b/LICENSES/dual/copyleft-next-0.3.1 > > @@ -0,0 +1,237 @@ > > +Valid-License-Identifier: copyleft-next-0.3.1 > > +SPDX-URL: https://spdx.org/licenses/copyleft-next-0.3.1 > > +Usage-Guide: > > + This license can be used in code, it has been found to be GPLv2 compatible > > + by attorneys at Redhat and SUSE, however to air on the side of caution, > > air ? Hehe, thanks I'll fix in the next spin. > > + it's best to only use it together with a GPL2 compatible license using "OR". > > This paragraph is not really understandable for Joe Developer. > > copyleft-next-0.3.1 is explicitly compatible with GPLv2 (or later) and > can therefore be used for kernel code. Though the best and recommended > practice is to express this in the SPDX license identifier by > licensing the code under both licenses expressed by the OR operator. > > Hmm? Let me try clarifying this further, how about: copyleft-next-0.3.1 is explicitly compatible with GPLv2 (or later) and can therefore be used for kernel code. Despite this, if you use copyleft-next-0.3.1 on Linux, the recommended practice is to express dual licensing with GPL using in the SPDX license identifiers by using by the OR operator. > > + To use the copyleft-next-0.3.1 license put the following SPDX tag/value > > + pair into a comment according to the placement guidelines in the > > + licensing rules documentation: > > + SPDX-License-Identifier: GPL-2.0 OR copyleft-next-0.3.1 > > + SPDX-License-Identifier: GPL-2.0-only OR copyleft-next 0.3.1 > > + SPDX-License-Identifier: GPL-2.0+ OR copyleft-next-0.3.1 > > + SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1 > > Please don't propagate the GPL-2.0 and GPL-2.0+ tags. They are > outdated (still valid) in the SPDX spec, which reminds me that I should > update the relevant documentation... OK thanks for the recommendation, I'll leave it at: + SPDX-License-Identifier: GPL-2.0 OR copyleft-next-0.3.1 + SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1 Luis
