substitutes « etc - guix - Wojtek's customized Guix

Mode	Name	Size
-rw-r--r--	berlin.guix.gnu.org.pub	118	log plain about
-rw-r--r--	bordeaux.guix.gnu.org.pub	116	log plain about
l---------	ci.guix.gnu.org.pub -> berlin.guix.gnu.org.pub	23	log plain about
l---------	ci.guix.info.pub -> berlin.guix.gnu.org.pub	23	log plain about

g'> This fixes a test failure exhibited by fb17a89912c2a3738dae716e30481c11e1c6f0ac whereby assignments to 'out' in guix-gc.sh would go to the 'out' environment variable, when it exists, which in turn prevents garbage collection of $out. * tests/guix-gc.sh: Add 'unset' invocations.