[bug#45692] [PATCH v4 3/3] gnu: Add ZFS service type.

[raid5atemyhomework]

Hello Maxime,
> > Other said, the distribution of the zfs.ko is an issue, not
> > provide a way to build it locally. Well, it does not appear to be a GPL
> > violation, IIUC the SFC analysis.
>
> I neglected that the terms of the GPL that come into play depend on whether
> one is only distributing source code () or also binaries, and whether one is
> distributing modified source code.
> I don't quite see a GPL violation anymore if we only distribute unmodified
> source code. However, what about freedom (1) and (3) (freedom to [...] and
> change the program in source form and (3) distribute modified versions)?
> I was going to write something here about why that would not be (legally)
> possible because of the CDDL and GPL, but I forgot why it wouldn't be
> possible. Maybe it is actually possible?
> () raid5atemyhomework noted that guix does not distribute source code,it only 
> points to source code locations. I don't quite agree. From my
> point of view, on whose server the source code is hosted is merely a
> technicality, guix is just ‘out-sourcing’ the source code distribution.
> Besides, ci.guix.gnu.org keeps a copy of the source code, and
> (guix download) will try to download from ci.guix.gnu.org.

*shrug* if so, take note that the `zfs` package modifies the build system and 
even some of the source code in order to adapt it to the slightly different 
Guix environment (in particular, Guix does not give an FHS to packages being 
built, so we need to point some paths directly to absolute paths).

I am not really interested in modifying the patch unless the license issue is 
resolved, so I will wait until Guix maintainers can actually agree on whether 
there is a license violation or not.

Thanks
raid5atemyhomework