00-wsl2-systemd.sh

SYSTEMD_EXE="$(command -v systemd)"

if [ -z "$SYSTEMD_EXE" ]; then
        if [ -x "/usr/lib/systemd/systemd" ]; then
                SYSTEMD_EXE="/usr/lib/systemd/systemd"
        else
                SYSTEMD_EXE="/lib/systemd/systemd"
        fi
fi

SYSTEMD_EXE="$SYSTEMD_EXE --unit=multi-user.target" # snapd requires multi-user.target not basic.target
SYSTEMD_PID="$(ps -eo pid=,args= | awk '$2" "$3=="'"$SYSTEMD_EXE"'" {print $1}')"

if [ -z "$SYSTEMD_PID" ] || [ "$SYSTEMD_PID" -ne 1 ]; then
        if [ -z "$SUDO_USER" ]; then
                export > "$HOME/.profile-systemd"
        fi

        if [ "$USER" != "root" ]; then
                exec sudo /bin/sh "/etc/profile.d/00-wsl2-systemd.sh"
        fi

        if [ -z "$SYSTEMD_PID" ]; then
                env -i /usr/bin/unshare --fork --mount-proc --pid -- sh -c "
                        mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc
                        exec $SYSTEMD_EXE
                       " &
                while [ -z "$SYSTEMD_PID" ]; do
                        SYSTEMD_PID="$(ps -eo pid=,args= | awk '$2" "$3=="'"$SYSTEMD_EXE"'" {print $1}')"
                        sleep 1
                done
        fi

        exec /usr/bin/nsenter --all --target "$SYSTEMD_PID" -- su - "$SUDO_USER"
fi

unset SYSTEMD_EXE
unset SYSTEMD_PID

[ -f "$HOME/.profile-systemd" ] && source "$HOME/.profile-systemd"

sudoers

%sudo ALL=(root) NOPASSWD: /bin/sh /etc/profile.d/00-wsl2-systemd.sh