BTW, both said e-mail addresses are bouncing.  May be some research
for the copyright holders is needed. :-(

On Sat, Nov 07, 2020 at 07:20:47PM +0100, carsten.dorm...@biom.uni-freiburg.de 
wrote:
> Dear Andreas,
> 
> oops.
> 
> To be honest, I had scanned the licence statement in that file, but not 
> noticed the notice.
> 
> The code in bipartite is based on code by Aaron Clauset, who himself used the 
> Mersenne Twister to avoid the relatively short random number period. We 
> (Rouven Strauss and I) did not touch that bit of code at all; our work was 
> solely on the bit produced by Aaron. His code is available publicly here: 
> http://tuvalu.santafe.edu/~aaronc/hierarchy/ 
> <http://tuvalu.santafe.edu/~aaronc/hierarchy/> 
> 
> I never wrote to any of the emails listed. It is indeed somewhat awkward and 
> I have no idea what to do about it.
> 
> Wikipedia does not square with the notice you found: 
> https://en.wikipedia.org/wiki/Mersenne_Twister 
> <https://en.wikipedia.org/wiki/Mersenne_Twister>, calling it "permissively 
> licensed".
> 
> Given Debian's merit of being very careful with such licenses, I can only ask 
> you for suggestions: is there anything I can do, you think, to push the 
> Mersenne Twister towards a GPL-like license?
> 
> Cheers,
> Carsten
> 
> 
> 
> 
> 
> > On 7. Nov 2020, at 17:59, Andreas Tille <andr...@fam-tille.de> wrote:
> > 
> > Hi,
> > 
> > I intend to package bipartite for Debian since some R package needs
> > it to run its test suite.  Our ftpmaster who is checking licensing
> > issues stumbled upon the file src\MersenneTwister.h.  It contains
> > an additional clause to the license which says:
> > 
> > // The original code included the following notice:
> > //
> > //     When you use this, send an email to: matum...@math.keio.ac.jp
> > //     with an appropriate reference to your work.
> > //
> > // It would be nice to CC: rjwag...@writeme.com and 
> > co...@math.washington.edu
> > // when you write.
> > 
> > Would you please clarify how far the "original code" is changed?  Its
> > also hard to interpret what the "send an email to" might mean.  Should
> > every user who is using the bipartite package send an e-mail to the
> > authors?  That's really hard to realise since we can not guarantee that
> > every user will read the copyright statement of all software that is
> > installed.  So some clarification what that clause might mean would be
> > appreciated.
> > 
> > Kind regards
> > 
> >     Andreas.
> > 
> > ----- Forwarded message from Joerg Jaspert 
> > <ftpmas...@ftp-master.debian.org> -----
> > 
> > Date: Fri, 06 Nov 2020 23:00:08 +0000
> > From: Joerg Jaspert <ftpmas...@ftp-master.debian.org>
> > To: Andreas Tille <ti...@debian.org>, Debian R Packages Maintainers 
> > <r-pkg-t...@alioth-lists.debian.net>
> > Subject: r-cran-bipartite_2.15-1_amd64.changes REJECTED
> > 
> > 
> > Hi Maintainer,
> > 
> > rejected, sorry, but src\MersenneTwister.h is not GPL.
> > Also, how much is that code there based on "the original code"? See
> > the paragraph directly below the license. The requirement there is
> > *NOT* nice for inclusion in Debian.
> > 
> > --
> > bye Joerg
> > 
> > 
> > 
> > ===
> > 
> > Please feel free to respond to this email if you don't understand why
> > your files were rejected, or if you upload new files which address our
> > concerns.
> > 
> > 
> > _______________________________________________
> > R-pkg-team mailing list
> > r-pkg-t...@alioth-lists.debian.net
> > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/r-pkg-team
> > 
> > ----- End forwarded message -----
> > 
> > -- 
> > http://fam-tille.de
> 
> — — — — — — 
> Carsten Dormann
> 
> Professor of Biometry and Environmental System Analysis
> Faculty of Environment and Natural Resources
> University of Freiburg
> Tennenbacher Str. 4
> 79106 Freiburg
> 
> Tel.: 0049 (0)761 203-3750
> Fax.: 0049 (0)761 203 3751
> Email: carsten.dorm...@biom.uni-freiburg.de
> 

-- 
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