ok, so we can make nauty standard package! ---------- Forwarded message ---------- From: "Dima Pasechnik" <dmitrii.pasech...@cs.ox.ac.uk> Date: 8 Oct 2015 10:05 am Subject: Fwd: Re: nauty in Sage (was: Code generating finite posets of given size (fwd)) To: "Dima Pasechnik" <dimp...@gmail.com> Cc:
From: Brendan McKay <brendan.mc...@anu.edu.au> Date: 7 Oct 2015 11:48 pm Subject: Re: nauty in Sage (was: Code generating finite posets of given size (fwd)) To: Dima Pasechnik <dmitrii.pasech...@cs.ox.ac.uk> Cc: Jori Mäntysalo <jori.mantys...@uta.fi>,<gunnar.brinkm...@ugent.be>, b...@cs.anu.edu.au > Dear Dima, > > You can use the source code of nauty in Sage with the words "with the exception of > sale for profit or application with nontrivial military significance" removed from the > copyright notice. I take it that you can keep the rest of the copyright notice intact. > > You can take this email as official permission. > > Perhaps you can use the attached version (not much distributed yet). In particular > utilities for files of digraphs are implemented. > > Cheers, Brendan. > > > On 08/10/15 07:05, Dima Pasechnik wrote: > > Dear Brendan, > > Sage(math) has the nauty package up an running, e.g > > sage: list(digraphs.tournaments_nauty(4)) > [Digraph on 4 vertices, > Digraph on 4 vertices, > Digraph on 4 vertices, > Digraph on 4 vertices] > > but we want more: a better integration... > (e.g. the above would only work if the user installed an optional package 'nauty') > > To bring this up again: the only way we could incorporate nauty into the main Sage library > is by including your files with the "exception of sale > for profit or application with nontrivial military significance" part of the copyright notice removed. > As Sage is released under GPL, we cannot keep it in the source. > (cf. http://www.gnu.org/licenses/gpl-faq.en.html#NoMilitary) > > Did you mean to tell us to remove it if we must? > Or rather you weren't aware that we cannot just put your files there untouched? > > Thanks, > Dima > > > > > On 7 October 2015 at 11:11, Jori Mäntysalo <jori.mantys...@uta.fi> wrote > > ---------- Forwarded message ---------- > Date: Thu, 30 Oct 2014 12:39:58 +0000 > From: Brendan McKay <brendan.mc...@anu.edu.au> > To: Jori Mantysalo <jori.mantys...@uta.fi>, > Gunnar Brinkmann <gunnar.brinkm...@ugent.be>, > "b...@cs.anu.edu.au" <b...@cs.anu.edu.au> > Subject: Re: Code generating finite posets of given size > > Sorry, I forgot to answer. It applies to all of the nauty files, but > for incorporation into Sage you can ignore it. > > Brendan. > > ________________________________________ > From: Jori Mantysalo <jori.mantys...@uta.fi> > Sent: 30 October 2014 23:00 > To: Gunnar Brinkmann; b...@cs.anu.edu.au > Subject: Re: Code generating finite posets of given size > > On Wed, 8 Oct 2014, Gunnar Brinkmann wrote: > >>> I am now packaging it. Nauty.h contains copyright with "exception of sale >>> for profit or application with nontrivial military significance." Does this >>> apply to whole package? If so, I will make this an optional package, as >>> core packages are GPL only. > > >> this is a question Brendan will answer. Good to hear that you succeeded >> in making it available in Sage. > > > There has now been three weeks since I asked this. No horry, but I just > ping you to be sure that this has not been forgotten. > > -- > Jori Mäntysalo > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
