From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keith Osterheld <keitho@openmailbox.org>
Subject: Configuration System's Handling of Missing Packages
Date: Wed, 23 Dec 2015 21:08:40 -0800
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Hi,

How does the configuration system handle references to packages that
aren't installed? For example, if I add (use-package-modules xfce) to my config file
but I don't have xfce installed, will guix automatically install it, or
will it throw errors?

Keith