Il giorno mar 4 dic 2018 alle ore 12:07 Xavier <[email protected]> ha scritto: > > Le 04/12/2018 à 11:17, Giacomo Tesio a écrit : > > > > To be honest, to my untrained eye the tentacle of evil test might be a > > case against GNU License common use of "or (at your option) any later > > version." because if a project moves to an _apparently_ good new > > version of GPL and accept patches under it, and then turns out that > > the upgrade had issues, they might have huge troubles to go back at a > > previous version. > > No, the software you gave is usable with current license even if next > version is more restrictive (you can then fork). "Tentacle of Evil test" > forbids the author to restrict later what is covered now with the > current license (see French difference between "gratuit" and "libre": > both translated to "free").
No sorry I explained my doubt badly. I'm thinking of a project X licensed as GPLv3+ that after the release of GPLv4 decide to move to GPLv4+ (as happened to many GPLv2+ projects). This is fine and expected, unless Hydra manages to infiltrate FSF with a couple of cool lawyers and to corrupt the text in some overlooked way. In this case, if after a couple of years Hydra start suing people according to such overlooked detail, people would have a hard issue to go back to GPLv3 without discarging all the patches provided. A corner case, I know... but pretty in line with the Tentacle of Evil theme... :-) Giacomo
