* gnu/services/configuration.scm (list-of-packages?): Allow as well
tuples of a package and its output.
* gnu/home/services/sway.scm (list-of-packages): Remove duplicate.
Change-Id: I42622a29ac808c76928e9056dee9330d5e1b3f39
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Merges: #5470