~/.config/guix/channels.scm:
        mkdir -p ~/.config/guix
        cp channels.scm ~/.config/guix/channels.scm

install:
        guix archive --authorize < signing-key.pub
        guix system reconfigure ./config.scm --substitute-urls='https://ci.guix.gnu.org https://bordeaux.guix.gnu.org https://substitutes.nonguix.org'