Re: [ccp4bb] The CCP4 license is ambiguous

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

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Subject: Re: The CCP4 license is ambiguous
From: Michel Fodje michel {- dot -} fodje {- at -} LIGHTSOURCE {- dot -} CA
Date: 2007-07-03

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Subject: Re: The CCP4 license is ambiguous
From: Charles Ballard c {- dot -} c {- dot -} ballard {- at -} DL {- dot -} AC {- dot -} UK
Date: 2007-07-04

Subject: Re: The CCP4 license is ambiguous
From: Kevin Cowtan cowtan {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2007-07-04

I was speaking imprecisely. I will try again.

You cannot create a derived work containing both CCP4 6.* licensed code
and GPL'd code, and distribute the resulting program, since the GPL
demands that the derived work be distributed without additional
restirctions and the CCP4 6.* license imposes additional restrictions on
redistribution - in particular (but not limited to) an indemnity clause.

Ethan A Merritt wrote:
> On Tuesday 03 July 2007 06:55, Kevin Cowtan wrote:
>> I'm afraid there is no ambiguity. You can't use the CCP4 version 6.*
>> libraries in GPL software.
>
> This sounds strange to me.
> The question is usually raised in the other direction - whether GPL
> libraries can be used by a non-GPL program [*].
>
> Here you are saying that a GPL program cannot use non-GPL libraries.
> I believe this is false. To take an obvious example, consider GPL
> software running on Windows and calling into the system libraries.
> Do you think that Cygwin has been in violation of the GPL all these
> years?
>
> Or perhaps I misunderstand. Are you saying that the current CCP4
> license does not permit combination with non-CCP4 code?

CCP4bb navigation

CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Re: The CCP4 license is ambiguous
From: Michel Fodje michel {- dot -} fodje {- at -} LIGHTSOURCE {- dot -} CA
Date: 2007-07-03

Next message:
Subject: Re: The CCP4 license is ambiguous
From: Charles Ballard c {- dot -} c {- dot -} ballard {- at -} DL {- dot -} AC {- dot -} UK
Date: 2007-07-04