[Haskell-cafe] Re: GPL answers from the SFLC (WAS: Re: ANN: hakyll-0.1)

Heinrich Apfelmus apfelmus at quantentunnel.de
Sun Mar 7 05:29:42 EST 2010

Robert Greayer wrote:
> There's still a lot of gray area here -- the mere existence of a dependency
> doesn't imply that a software package is useless without the dependency,
> so there are many situations in which P could depend on Q and not be
> a derivative of Q, because the dependency can be disabled in some way
> and the software would still function.  As an example -- pandoc can be
> built with or without highlighting-kate, and is useful either way.  They're both
> GPL and by the same author, so there's no issue, but were that not the
> case it would seem obvious that pandoc isn't derivative of -kate, and
> thus could (by this reasoning) be released independently under different
> terms.  The same may not be true of the hakyll / pandoc situation which
> sparked this controversy.

>From what I gather, Hakyll is helper program / library for generating
static websites. It uses pandoc to offer a default markdown -> html
converter, which means that it's also useful without it.

Heinrich Apfelmus


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