Thanks, you're right. Good catches—I made both typos while manually
copying from here:
https://lists.gnu.org/archive/html/guix-devel/2016-04/msg00964.html.
guix system init is pulling sources, now.

Leo Famulari:
> On Wed, Jun 08, 2016 at 11:18:39PM +0000, Kete Foy wrote:
>> I got this error when trying to initialize the guix system:
>> /mnt/etc/config.scm:8:0: error: source expression failed to match any
>> pattern
> 
> Also, I've never tried having two file-system sections, but I bet that
> is causing a problem as well.
> 

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