linux-kernel - Re: [PATCH v9 1/6] LICENSES: Add the copyleft-next-0.3.1 license

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Date:   Wed, 25 May 2022 16:53:58 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Richard Fontana <fontana@...rpeleven.org>, tj@...nel.org,
        gregkh@...uxfoundation.org, akpm@...ux-foundation.org,
        jeyu@...nel.org, shuah@...nel.org, bvanassche@....org,
        dan.j.williams@...el.com, joe@...ches.com, keescook@...omium.org,
        rostedt@...dmis.org, minchan@...nel.org,
        linux-spdx@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        Kuno Woudt <kuno@...b.nl>,
        copyleft-next@...ts.fedorahosted.org,
        Ciaran Farrell <Ciaran.Farrell@...e.com>,
        Christopher De Nicolo <Christopher.DeNicolo@...e.com>,
        Christoph Hellwig <hch@....de>,
        Jonathan Corbet <corbet@....net>,
        Thorsten Leemhuis <linux@...mhuis.info>
Subject: Re: [PATCH v9 1/6] LICENSES: Add the copyleft-next-0.3.1 license

On Wed, May 25, 2022 at 10:51:43PM +0200, Thomas Gleixner wrote:
> On Wed, May 25 2022 at 09:57, Luis Chamberlain wrote:
> > On Mon, May 23, 2022 at 11:22:36PM +0200, Thomas Gleixner wrote:
> >> 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.
> 
>   'using in the ..' ?
> 
> and
> 
>   'by using by' is off by one 'by' :)
> 
> I'm not seeing how that clarifies stuff further. I might be biased, but
> the version I suggested is crystal clear.

Oh sorry, I didn't realize the paragraph you posted was a suggestion, I
thought it was the one you were indicating needed further enhancement!

I'll just take yours then.

> >> > +  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-only OR copyleft-next-0.3.1
> 
> please. See my previous reply quoted above.
> 
> > +    SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1

Sorry I hadn't had my coffee yet so I should only list:

SPDX-License-Identifier: GPL-2.0-only OR copyleft-next 0.3.1
SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1

Will do this on the next spin.

  Luis