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Re: Attribution with CC-BY-SA 3.0

On Sat, 1 Sep 2012 22:36:03 +0200 Zoot Zoot wrote:

> Hi,


> I'm a contributor with the Free Software game project 0 A.D. (package name:
> 0ad <http://packages.debian.org/wheezy/0ad>).
> We've recently found out that someone is
> selling<http://www.ebay.co.uk/sch/i.html?_nkw=0+A.D.+RTS>copies of our
> game on eBay
> in a misleading manner,
> For this reason, we have discussed adding an attribution clause to our
> CC-BY-SA 3.0 licensed artwork in the game that requires a seller to make
> any buyers aware that the game can be downloaded for free from our website
> prior to the purchase.

I am not sure I understand this correctly.

Do you mean that you want to add a restriction that requires any seller
to warn potential buyers that what they are going to buy may be obtained
gratuitously from elsewhere?

Where is the part of CC-by-sa-v3.0 that would allow you to add such a
restriction (without effectively changing the licensing terms [1])?

[1] something that can be done only in agreement with all the copyright
holders and that would anyway mean that the license would no longer be
CC-by-sa-v3.0 but "CC-by-sa-v3.0 + additional restriction"...

> To the best of my knowledge CC-BY-SA 3.0 affords us the ability to add such
> a clause,

I fail to find any relevant part of CC-by-sa-v3.0 that would allow

Section 4c requires anyone who re-distributes the Work (the eBay seller
qualifies as re-distributor) to "provide, reasonable to the medium or
means [the re-distributor is] utilizing": the name of the Original
Author if supplied, and possibly some designated "Attribution Parties",
the title of the Work if supplied, and "to the extent reasonably
practicable, the URI, if any, that Licensor specifies to be associated
with the Work, unless such URI does not refer to the copyright notice
or licensing information for the Work".

However, Section 4c does not require the re-distributor to provide all
these data prior to the act of distributing a copy of the Work, as far
as I can tell.

> and to the best of my knowledge CC-BY-SA 3.0 is compatible with
> the DFSG.

This is something on which I personally disagree with the Debian FTP
masters: they claim that CC-by-sa-v3.0 meets the DFSG, while I am
convinced that it fails to meet the DFSG.
But that's another story [2]...

[2] if you are interested to read more details, please see

> I would like to ask whether you all agree that adding such a clause to a
> Debian package would be compatible with the DFSG and other relevant
> guidelines?

I personally do not agree, in the sense that I disagree with the FTP
masters on the acceptability of CC licenses, and I therefore think that
0ad-data is already unsuitable for Debian (main).

Moreover, I don't think that CC-by-sa-v3.0 includes the possibility of
adding the restriction that you mentioned.

But please note that I am not an official member of the Debian Project
(I am just an external contributor) and that I do not speak on behalf
of the Debian Project.

> Thank you.

You're welcome.

 New GnuPG key, see the transition document!
..................................................... Francesco Poli .
 GnuPG key fpr == CA01 1147 9CD2 EFDF FB82  3925 3E1C 27E1 1F69 BFFE

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