MS-PL/GPL compatibility, was Re: For Approval: Microsoft Permissive License

Matthew Flaschen matthew.flaschen at
Thu Aug 23 20:41:57 UTC 2007

Wilson, Andrew wrote:

> Now, back on the (real) topic, approval of the licenses.
> Unless and until there is an OSD #11 which actually requires
> compatibility with other open source licenses, I do not believe
> OSI can reject a submission solely on the grounds of incompatibility.

I don't think so either.  However, I would become inclined to defer
approval until Microsoft clarifies this issue, preferably (but not
necessarily) by clarifying the license itself.

Jim Thatcher, outside counsel for MS, has just posted a clarification
message that primarily addressed binary derivative works.  I have just
asked him to explain in more depth what kinds of licenses are permitted
for source code derivatives.

Matt Flaschen

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