[Numpy-discussion] Default builds of OpenBLAS development branch are now fork safe

[Robert Kern]

It's only a problem in that the binary will not be BSD, and we do need to
communicate that appropriately. It will contain a significant component
that is MPL2 licensed. The terms that force us to include the link to the
Eigen source that we used forces downstream redistributors of the binary to
do the same. Now, of all the copyleft licenses, this is certainly the most
friendly, but it is not BSD.
On Mar 28, 2014 6:43 PM, "Nathaniel Smith" <njs at pobox.com> wrote:

> On Fri, Mar 28, 2014 at 4:58 PM, Robert Kern <robert.kern at gmail.com>
> wrote:
> > On Fri, Mar 28, 2014 at 2:54 PM, Sturla Molden <sturla.molden at gmail.com>
> wrote:
> >> Matthew Brett <matthew.brett at gmail.com> wrote:
> >>
> >>> I see it should be possible to build a full blas and partial lapack
> >>> library with eigen [1] [2].
> >>
> >> Eigen has a licensing issue as well, unfortunately, MPL2.
> >>
> >> E.g. it requires recipients to be informed of the MPL requirements (cf.
> >> impossible with pip install numpy).
> >
> > That's not the relevant condition. That's easily taken care of by
> > including the MPL2 license text in the binary alongside numpy's BSD
> > license text. This is no different than numpy's BSD license itself,
> > which requires that the license text be included. It's not like people
> > can't distribute any MPL2 project on PyPI just because pip doesn't
> > print out the license before installing.
> >
> > The extra-BSD conditions of the MPL2 are sections 3.1 and 3.2.
>
> Those requirements just say that in addition to including the MPL2
> license text, we also have to include a notice saying where the source
> code is available, i.e. the package would have to somewhere include a
> link to eigen.org.
>
> https://www.mozilla.org/MPL/2.0/FAQ.html#distribute-my-binaries
>
> I'm not sure why this would be a problem.
>
> -n
>
> --
> Nathaniel J. Smith
> Postdoctoral researcher - Informatics - University of Edinburgh
> http://vorpus.org
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