* gnu/services/base.scm (agetty-shepherd-service) (mingetty-shepherd-service) (nscd.conf-file) (udev-shepherd-service) (udev-etc) (gpm-shepherd-service) (network-set-up/linux) (network-tear-down/linux) (static-networking-shepherd-service) (greetd-agreety-tty-session-command) (greetd-agreety-tty-xdg-session-command): Use 'match-record' instead of 'match'. (guix-accounts): Use <guix-configuration> accessors. (udev-service-type): Use <udev-configuration> accessors.