[License-discuss] Shortest copyleft licence

[John Cowan]

Tim Makarios scripsit:

> 50 words.  It doesn't require making the source code available, but
> recipients of binaries will always be free to make derivative works by
> reverse engineering the binaries.  It does make itself incompatible with
> other copyleft licences, though, which seems difficult to avoid in a
> very short, non-weak copyleft licence.  I'd be keen to be proven wrong
> on that point, though.

Simply add "or under the GNU General Purpose License (any version)".  
In practice, the GPL is the only major copyleft software commons.

-- 
John Cowan          http://www.ccil.org/~cowan        cowan at ccil.org
Your worships will perhaps be thinking that it is an easy thing
to blow up a dog? [Or] to write a book?
    --Don Quixote, Introduction