Re: Would this comply with DFSG?
John Hasler <email@example.com> writes:
> Your dual-license scheme would be DFSG-compliant.
I'm not so sure about that, given that DFSG talks about allowing
derived works to be distributed under the *same* license as the
Here is my current attempt to dodge around that:
Foobar is copyright 1991-1999: University of Somewhereish
The University of Somewhereish hereby grants any person,
orgnization, or institution who have obtained a copy of
Foobar, irrespective of how or wherefrom he obtained it,
who is referred to as 'you', the following nonexclusive
1. You may use Foobar and its accompanying programs,
whether for commercial, educational, research,
private, or any other purpose, provided that you
acknowledge the Disclaimer of Warranty set forth
at the end of this copyright statement.
2. You may modify Foobar and use the modified form yourself.
3. You may redistribute Foobar, in source or binary forms,
in whole or in parts, but without modifying it other
than compiling the source code you've received, provided
a) that you preserve this entire copyright statement,
including any notices that have been added according
to clause 4(e)iii.
b) that, when distributing only binaries, you include
information as to where sources can be obtained.
c) that you do not attempt to constrain the receiver
or any other third party from exercising the rights
granted in this copyright statement.
4. You may distribute a version of Foobar that you have
modified, under terms set forth in clause 3, provided
a) that neither the accompanying documentaion nor
the output of the modified program can reasonably
be misread to the effect that the modified program
is the original Foobar as distributed by the
University of Somewhereish.
b) that the accompanying documentation clearly
acknowledges the modified program's ancestry
from code developed at the University of Somewhereish.
c) that you include information as to where the original
version can be obtained.
d) that you share your modifications with the Foobar
user community by allowing the University of
Somewhereish to incorporate your modification or
parts of it in future releases of Foobar, in return
for giving you proper credit.
e) that you either
i - send your modifications to the Foobar development
team by email to firstname.lastname@example.org or by another
mutually agreed-on means, or
ii - discover that the stated email address does not
exist anymore, or
iii - insert a prominent notice before any appearance
of this licence in any file in your distribution,
that clause 5 of this license does not apply to
your modified version.
5. When using a version of Foobar that has not been modified
except from modifications made by you and modifications that
have been reported to the Univesity of Somewhereish as
described in clause 4(e)i or 4(e)ii, you get the following
a) Even tough the output from Foobar contains portions
created by The University of Somewhereish, the
University of Somewhereish shall not claim any rights
relating to said output, except those rights the
University may already possess relating to the data
you provide as input to Foobar.
b) If you modify Foobar so much that it is neither a system
that performs <whatever Foobar does>, nor an essential
component of such a system, you may do whatever you like
to the modified system, including distributing it under
any terms that you deem fit.
However, this provision does not allow you or anypone
else to claim any exclusive rights regarding the parts
of the modified system that it has in common with Foobar.
c) You may distribute modified or unmodified binary forms
of the Frobnitz Library that is part of Foobar, either
as a separate file or incorporated in an executable,
under any terms that you deem fit.
Unless you know positively that this clause does not apply
to you, you may interpret the absence of any notice as
described in clause 4(e)iii to mean the this clause does
DISCLAIMER OF WARRANTY (capitalize according to taste)
.. oops, here arises another problem. I stole the disclaimer
in my current draft from the GPL (and downcased it) but the
FSF supposedly owns the copyright for that.
Are there any public-domain warranty disclaimers one can use
or adapt instead?