From: Urabe Shyouhei Date: 2010-06-18T00:57:31+09:00 Subject: [ruby-core:30793] Re: [Feature #2032] Change the license to "GPLv2+ or Ruby's original". (2010/06/17 4:25), Yusuke ENDOH wrote: >> Is GPLv3 compatible with GPLv2? >> >> No. > The note restricts the link with readline6. Isn't it "any further > restrictions"? I don't know. Shyouhei, let me ask your opinion. As you quote GPLv2 vs GPLv3 are incompatible already, so the note do not impose any *further* restrictions than what are there now. At least I believe so. This is not a restriction; a fact.