On Thursday, 7 May 2020 13:58:55 PDT David Waterman wrote:
> Dear Ethan,
>
> The copy of xia2 that I have on my machine says at the top of the source
> > # Copyright (C) 2013 David Waterman
> > #
> > # This code is distributed under the terms and conditions of the
> > # CCP4 Program Suite Licence Agreement as a CCP4 Application.
>
>
> This surprised me greatly. I wondered if perhaps you were referring to the
> ccp4i2 GUI for xia2, for which I must admit responsibility. However, I
> can't find "Copyright (C) 2013 David Waterman" anywhere within the current
> release of CCP4, so I am perplexed.
I sincerely apologize for inferring more than I should have from that snippet.
My search may indeed have picked up a wrapper rather than the program
itself. Here is what I did:
head `locate bin/xia2`
> I would like to make it clear that xia2 is not distributed under the terms
> of the CCP4 licence. It has a permissive free software licence, namely
> BSD-3, which must surely conform to any reasonable definition of Open
> Source. See here https://github.com/xia2/xia2/blob/master/LICENSE
>
> While xia2 has certain modes that run non-open software, Graeme's point is
> that the default mode runs DIALS, which is BSD-3 as well.
>
> -- David
The larger point was that xia2 is not so much a computational code by
itself as an open-ended framework for multiple codes that are not
uniformly licensed or available for code inspection/modification.
I hope I have that right!
Ethan
--
Ethan A Merritt
Biomolecular Structure Center, K-428 Health Sciences Bldg
MS 357742, University of Washington, Seattle 98195-7742
########################################################################
To unsubscribe from the CCP4BB list, click the following link:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1
