Re: [xwiki-devs] License for wiki pages?

On Tue, Nov 10, 2015 at 10:18 AM, vincent(a)massol.net wrote: > > > > > > On 10 Nov 2015 at 10:13:31, Thomas Mortagne (thomas.mortagne@xwiki.com(mailto:thomas.mortagne@xwiki.com)) wrote: > >> On Tue, Nov 10, 2015 at 10:05 AM, vincent(a)massol.net wrote: >> > >> > >> > On 10 Nov 2015 at 10:03:10, Thomas Mortagne >> > (thomas.mortagne@xwiki.com(mailto:thomas.mortagne@xwiki.com)) wrote: >> > >> > >> >> On Tue, Nov 10, 2015 at 9:59 AM, vincent(a)massol.net wrote: >> >> > Hi Caleb, >> >> > >> >> > See below >> >> > >> >> > On 10 Nov 2015 at 09:51:04, Caleb James DeLisle >> >> > (cjd@cjdns.fr(mailto:cjd@cjdns.fr)) wrote: >> >> > >> >> >> >> >> >> >> >> >> On 10/11/15 09:40, vincent(a)massol.net wrote: >> >> >> > >> >> >> > On 10 Nov 2015 at 09:23:12, Thomas Mortagne >> >> >> > (thomas.mortagne@xwiki.com(mailto:thomas.mortagne@xwiki.com)) wrote: >> >> >> > >> >> >> >> IMO we should get rid of this old "The wiki documents (all the >> >> >> >> documents in the default .xar archive) are distributed under >> >> >> >> Creative >> >> >> >> Commons (CC-BY)” runtime message because: >> >> >> >> * when you install XWiki you end up with that in the footer and most >> >> >> >> people don't touch (and probably don't really understand) it and we >> >> >> >> should not choose for them the default license of theire own pages >> >> >> >> * we already license our page sources under LGPL and I don't see the >> >> >> >> point in having two licenses >> >> >> > >> >> >> > Was added by Sergiu in: >> >> >> > >> >> >> > http://www.xwiki.org/xwiki/bin/view/Main/License?viewer=changes&rev1=3.… >> >> >> > >> >> >> > It was following a discussion at >> >> >> > http://markmail.org/message/wfewnlkcbaa64whq >> >> >> > >> >> >> > I think using CC-BY for the content is a good idea since we want our >> >> >> > users to be able to change the wiki page content without having to >> >> >> > redistribute their changes as LGPL. For example someone wanting to make a >> >> >> > flavor and modify some wiki pages. Unless we wish to force them to >> >> >> > redistribute their flavor as LGPL… >> >> >> > >> >> >> > My issue was more about the compatibility of the CC-BY with the LGPL >> >> >> > license. Actually if we think about it we distribute several kinds of >> >> >> > binaries: >> >> >> >> >> >> According to GNU, CC-BY is LGPL compatible: >> >> >> http://www.gnu.org/licenses/license-list.en.html#ccby >> >> >> I would have guessed that it was not but the GPL contains some odd >> >> >> clauses just for providing additional compatibility. >> >> > >> >> > ok that’s cool then. >> >> > >> >> > So we just need to confirm that we want our wiki pages (XML files) under >> >> > CC-BY and modify the licenses accordingly. >> >> > >> >> > Same question for VM files. >> >> > >> >> > Personally I’m fine with CC-BY for both. >> >> > >> >> > WDYT? >> >> > >> >> >> > * JAR file: No problem there, all code is under LGPL >> >> >> > * XAR files: No problem there, all code is under CC-BY. Note that >> >> >> > this means script code is also under CC-BY which doesn’t really support >> >> >> > source code but I don’t think we care. Actually there could be some problem >> >> >> > since in our XAR files we include pom.xml which link to JAR dependencies >> >> >> > under LGPL. The script calls LGPL code. Is that a problem? >> >> >> >> >> >> Not a problem, LGPL means linking is ok. >> >> >> >> >> >> > * WAR file: We need to clarify what’s the license for our VM files. >> >> >> > Do we want someone to be able to create a custom skin and redistribute it >> >> >> > under a license other than LGPL? Should the VM files be under CC-BY too? >> >> >> >> >> >> If they cannot possibly be used outside of XWiki, do we really care >> >> >> what the license is ? >> >> > >> >> > I agree we shouldn’t care and I’m in favor of CC-BY. Now do we need to >> >> > find all their authors to ask them if they’re ok to relicense them un CC-BY? >> >> > :) >> >> >> >> I don't really agree with the "we don't care", pages contain code and >> >> they are distributed on their own. It's not just some data you get in >> >> a XWiki distribution but extensions you install on a platform so they >> >> are software. It's like saying we don't care about some php software >> >> license, it only works with the pho runtime anyway… >> > >> > Ok. What’s your proposal? Have them under LGPL? >> > >> > That would mean: >> > >> > * Users can modify the content as long as they don’t redistribute it >> > * If users make modification to them and redistribute them, then they need >> > to use the LGPL license >> > >> > Would we be ok with that? >> >> It certainly make sense to me, we have lots of code in pages and I >> don't see why code from pages should not be as viral as code in Java >> when you reuse it. You can write any extension or flavor that does not >> reuse code coming from common pages and put whatever license you want >> (which should be the case most of the time, having a Main.WebHome page >> with completely new content does not mean you reuse Main.WebHome >> code). > > New pages are not an issue. If you write a custom skin and you copy paste some VM and makes change to them and then redistribute it then you need to use the LGPL license. I tough we were talking about pages.