Apologies, Robert, for you getting this twice: I forgot to CC the list
as well.
Robert Greayer
The crux here is that the source code of hakyll, released on hackage, is not a derivative of Pandoc (it contains, as far as I understand it, no Pandoc source code). A compiled executable *is* a derivative of Pandoc, so anyone who *distributes* a compiled executable would need to make *all* the source available under the GPL (including the hakyll source). Since the hakyll package is released under BSD3, this would be allowed (AIUI, IANAL).
That is my understanding as well: http://www.fsf.org/licensing/licenses/gpl-faq.html#IfLibraryIsGPL ,---- | If a library is released under the GPL (not the LGPL), does that mean | that any program which uses it has to be under the GPL or a | GPL-compatible license? | | Yes, because the program as it is actually run includes the library. `---- Thus, it means your program using Pandoc can be BSD3; but it can never be used in a proprietary program. -- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com