$ ln -sf /home/take/.ghq/github.com/takeokunn/guix-system/.exwm /home/take/.exwm
$ ln -sf /home/take/.ghq/github.com/takeokunn/guix-system/.bashrc /home/take/.bashrc
$ sudo ln -sf /home/take/.ghq/github.com/takeokunn/guix-system/system/config.scm /etc/config.scm
$ ln -sf /home/take/.ghq/github.com/takeokunn/guix-system/config/manifest.scm /home/take/.config/guix/manifest.scm
$ ln -sf /home/take/.ghq/github.com/takeokunn/guix-system/config/channels.scm /home/take/.config/guix/channels.scm