Scientific Libraries in Python

Gustavo Niemeyer niemeyer at
Wed Dec 5 13:41:59 CET 2001

> If SciPy is licensed under a BSD-like license, then there is no legal
> obstacle to distributing an extended version of SciPy under the GPL.
> There may, however, be political obstacles to making that extended
> version the new SciPy.

It depends on which BSD license it's licensed under, and if it has
received contributions from other developers or not.

If it has received contributions and the BSD license is the old one
(the one enforcing some actions when advertising the program), the
author may have to ask the contributors to change the license.

If it's the revised version, they are compatible.

If the author has received no contributions at all, he may change the
license of future versions, no matter what license it is currently
under, and what license he's going to. He's the copyright holder.

Many of these questions are answered in the GPL FAQ:

Gustavo Niemeyer

[ 2AAC 7928 0FBF 0299 5EB5  60E2 2253 B29A 6664 3A0C ]
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