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Re: why is graphviz package non-free?

Brian Thomas Sniffen <bts@alum.mit.edu> wrote:
> Matthew Garrett <mgarrett@chiark.greenend.org.uk> writes:
>> How does providing extra freedoms to certain recipients decrease the
>> freeness of a piece of software? Software under the GPL is free.
> It doesn't.  Requiring that others release more freedom in a mutual
> work than you will release is non-free.

Licenses that require people to provide more freedoms than the DFSG
requires should never be non-free, even if those freedoms are only
provided to certain people. Free software isn't about fairness or moral
justification. It's about being able to modify software and pass those
modifications on to someone else.

>> Software under the BSD license is free. Software that is sometimes under
>> one and sometimes under another ought to still be free.
> It is.  But software under a "you get GPL-like rights to my parts of
> this thing we're building together, and I get BSD-like rights to your
> parts" license is not free.

Why not? Which freedoms does it impact upon?
Matthew Garrett | mjg59-chiark.mail.debian.legal@srcf.ucam.org

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