On Thu, 2021-02-25 at 22:22 -0800, Flávio Cruz wrote: > [...] > On Wed, Feb 24, 2021 at 11:42 AM Maxime Devos <maximede...@telenet.be> wrote: > > Hi, > > > > I was wondering if the Common Lisp bindings by "Flavio Cruz" would > > make a nice start for GNU Guile bindings. I have questions on the > > license: according to > > > > https://git.savannah.gnu.org/cgit/hurd/incubator.git/tree/hurd.asd?h=clisp > > > > the bindings are "GPL v3.0". Does this mean "GPL v3.0", and only that > > version, or is this "GPL v3.0"-or any later version (at your choice etc.)? > > Personally, I would prefer "GPL v3.0"-or-later. > > To be frank, I'm not well versed on the consequences of making it GPL > v3.0-or-later. > Can you elaborate why you prefer that? I don't have a strong preference and > can > make it "-or-later".
Some pro's and con's of making it "-or-later" as I understand them, and some links to explanations of other people ... First, there is the explanation on <https://www.gnu.org/licenses/gpl-faq.html#VersionThreeOrLater>, with this pro as I understand it: * Pro: if for some reason the FSF decides to publish a GPL v4.0 (after the GPLv2.0 came the GPLv3.0, so it's quite possible there will be a GPLv4.0 at some point in the future), then the GPLv4.0 will be compatible with "cl-hurd" if "cl-hurd" is released as GPLv3.0-or-later. Note that the different versions of the GPL are incompatible with each other, unless GPL-v$X-or-later is used instead of GPL-v$X-only. * Con: If the Free Software Foundation becomes evil, then they could release a GPLv4.0 that ???. I'm a bit at a loss what the ??? would be. Perhaps a MIT-style license? I would put a link with an explanation on why this situation isn't realistic and why (due to legal reasons) the FSF cannot stop being the *Free Software* Foundation, but I cannot find the link anymore ... Also, I believe contributing to the Hurd involves some kind of copyright assignment (or something similar) to the FSF, so the FSF could decide by itself to release "cl-hurd" as GPLv4.0 I think. * Perhaps some other pro's and con's I forgot? I think I'll use the yet-to-be-written port of "cl-hurd" to Guile Scheme in some personal projects (https://notabug.org/mdevos/scheme-gnunet) and use ‘notify ports’ (https://www.gnu.org/software/hurd/gnumach-doc/Message-Send.html#Message-Send) to reduce blocking in <https://github.com/wingo/fibers> without requiring threads. Maybe I'll also use it in GNU Guix for creating containers. GNU Guix is GPLv3.0-or-later, so a GPLv3.0-only dependency may be problematic ... Thanks, Maxime.
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