[Fwd: [ubuntu]dual license strategy: GFDL&CC-BY-SA]

[Matthew East]

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Hi there,

This is an interesting question so I'm forwarding it to the
documentation team mailing list and Mako, who likes these things.

My initial instinct is that the website that you found is saying that if
a work is licensed under the cc-by-sa license, a subsequent derivative
work cannot be licensed under the gfdl. However the dual licensing
strategy may have been originally intended to avoid exactly that
concern, I wasn't around when that decision was taken.

I'm not really familiar with the concept of "dual licensing", and I find
it slightly hard to understand that on our documents it is said that
derivative works can use one *or* the other license.

It may be an appropriate time to have a second think about our licensing
policy.

Matt

- -------- Original Message --------
Subject: [ubuntu]dual license strategy: GFDL&CC-BY-SA
Date: Wed, 2 Aug 2006 23:06:20 +0800
From: weakish jiang <weakish at gmail.com>
To: mdke at ubuntu.com
References: <700384770608020749v2b19baecjdbadaac224a8d46e at mail.gmail.com>

"The Ubuntu Core Documentation Project uses a dual license strategy
for the documentation source-code. The documentation source-code
licenses are the GNU Free Documentation License (GFDL) and the
Creative Commons ShareAlike 2.0 License (CC-BY-SA). All works produced
as works for hire for Canonical will be released under both
licenses."[0]

And I found this on gnu.org:
Please don't use Creative Commons Attribution-Sharealike 2.0 license
for software or documentation, since it is incompatible with the GNU
GPL and with the GNU FDL.[1]

My question is whether the GFDL&CC-BY-SA dual license strategy holds.







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[0]https://wiki.ubuntu.com/DocumentationTeam/License
[1]http://www.gnu.org/licenses/license-list.html
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