The page that lists the packages currently available for GNU says WindowMaker is not a GNU package[0]. However, it clearly is a GNU package[1].
Footnotes: [0] http://www.gnu.org/software/guix/package-list.html [1] http://www.gnu.org/software/windowmaker/ -- ,= ,-_-. =. Bruno Félix Rezende Ribeiro (oitofelix) [0x28D618AF] ((_/)o o(\_)) There is no system but GNU; `-'(. .)`-' GNU Linux-Libre is one of its official kernels; \_/ All software must be free as in freedom;
