+if has_x; then
+ ###### install X
+ pi i3
+ if isarch; then
+ # xorg-xmessage for displaying error messages.
+ # optional dependency in arch, standard elsewhere.
+ pi xorg-server xorg-xmessage xorg-xsetroot xorg-xinit
+ fi
+
+ ##### install xinput
+ case $(distro-name) in
+ trisquel|ubuntu|debian)
+ pi xinput
+ ;;
+ arch)
+ pi xorg-xinput
+ ;;
+ esac
+
+ #### install redshift
+ case $(distro-name) in
+ trisquel|ubuntu|debian)
+ # recommends gets us geoclue (for darkening automatically at night i assume),
+ # which recommends modemmanager, which is annoying to fix for the model01 keyboard.
+ pi --no-install-recommends gtk-redshift
+ ;;&
+ arch)
+ pi redshift
+ ;;&
+ esac
+
+ ##### setup X autostart
+ # todo, figure this out for arch if we ever try out gnome.
+ # install for multiple display managers in case we use one
+ dir=/etc/gdm3
+ sudo mkdir -p $dir/PostLogin
+ sudo cp /a/bin/distro-setup/desktop-20-autostart.sh $dir/PostLogin/Default
+ sudo mkdir -p /etc/lightdm/lightdm.conf.d
+ sudo dd of=/etc/lightdm/lightdm.conf.d/12-iank.conf <<'EOF'
+[SeatDefaults]
+session-setup-script=/a/bin/distro-setup/desktop-20-autostart.sh
+EOF
+fi
+
+### install and configure wayland
+if has_wayland; then
+ pi sway xwayland
+ # originally used xkbcomp, documented in input-setup.sh, this doesnt
+ # work under wayland, but its still useful for creating the config,
+ # then modifying the system files.
+ sudo sed -i.orig '/key *<KPMU> *{/,/}/s/KP_Multiply/underscore/g' /usr/share/X11/xkb/symbols/keypad
+fi