Re: Fix the reducelcs license

[Ludovic Courtès]

Kei Kebreau <address@hidden> skribis:

> address@hidden writes:
>
>> If I am not wrong: When no "Version 3 only" is specified, it is always
>> "and later".
>
> Is there text in the GPL3 that says this? I was under the impression
> that the "or any later version" clause had to be specified
> explicitly.

No it’s the opposite.

Specifically, from Section 14 of GPLv3:

  If the Program does not specify a version number of the GNU General
  Public License, you may choose any version ever published by the Free
  Software Foundation.

In Guix we encode this as ‘gpl3+’.

So the rule is: always put ‘+’ unless the source code headers or some
other prominent file restricts to a specific version of the license.

Ludo’.