Start the desktop after install by enabling the login screen and services

2026-09-20 06:40:41 -04:00
parent f4dd3b7532
commit 8f124f47c2
17 changed files with 784 additions and 279 deletions
@@ -0,0 +1,102 @@
+session_entry_dir=/usr/local/share/wayland-sessions
+greeter_compositor_config=/etc/sddm/hyprland-greeter.lua
+
+# SDDM's stock Wayland greeter runs on weston, which Blob does not install.
+# Point it at Hyprland with a greeter-only config instead.
+install_login_config() {
+  install_root_file "$repo_dir/default/sddm/hyprland-greeter.lua" \
+    "$greeter_compositor_config" "sddm/hyprland-greeter.lua"
+  install_root_file "$repo_dir/default/sddm/10-blob.conf" \
+    /etc/sddm.conf.d/10-blob.conf "sddm.conf.d/10-blob.conf"
+}
+
+install_session_entry() {
+  install_root_file "$repo_dir/session/blob.desktop" \
+    "$session_entry_dir/blob.desktop" "wayland session entry"
+}
+
+install_autologin() {
+  if [[ $autologin == false ]]; then
+    return 0
+  fi
+
+  local generated
+  generated="$(mktemp)"
+  printf '[Autologin]\nUser=%s\nSession=blob.desktop\n' "$USER" >"$generated"
+  install_root_file "$generated" \
+    /etc/sddm.conf.d/99-blob-autologin.conf "sddm.conf.d/99-blob-autologin.conf"
+  rm -f "$generated"
+}
+
+# Enabling sddm is not enough on a machine installed without a display manager:
+# its default target is multi-user.target, which never pulls in graphical.target.
+enable_display_manager() {
+  if ! system_unit_exists sddm.service; then
+    say "WARN  sddm.service not found; the desktop cannot start at boot"
+    return 0
+  fi
+
+  local enable_needed=false
+  case "$(system_unit_state sddm.service)" in
+    enabled | enabled-runtime) ;;
+    *) enable_needed=true ;;
+  esac
+
+  local default_target
+  default_target="$(systemctl get-default 2>/dev/null || true)"
+
+  local target_needed=false
+  [[ $default_target == graphical.target ]] || target_needed=true
+
+  if [[ $enable_needed == false && $target_needed == false ]]; then
+    say "ok    display manager"
+    return 0
+  fi
+
+  note_change
+  if [[ $check == true ]]; then
+    [[ $enable_needed == true ]] && say "would enable sddm.service"
+    [[ $target_needed == true ]] && say "would set the default target to graphical.target"
+    return 0
+  fi
+
+  if [[ $enable_needed == true ]]; then
+    as_root systemctl enable sddm.service
+    say "enable sddm.service"
+  fi
+
+  if [[ $target_needed == true ]]; then
+    as_root systemctl set-default graphical.target
+    say "set   default target to graphical.target"
+  fi
+}
+
+# The installer is usually run from a bare console on a fresh machine, where
+# enabling the display manager alone leaves the user looking at a shell prompt.
+launch_desktop() {
+  if [[ $check == true ]]; then
+    return 0
+  fi
+
+  if [[ $no_launch == true ]]; then
+    say "Run 'sudo systemctl start sddm' or reboot to reach the desktop."
+    return 0
+  fi
+
+  if ! system_unit_exists sddm.service; then
+    return 0
+  fi
+
+  if [[ -n ${WAYLAND_DISPLAY:-} || -n ${DISPLAY:-} ]]; then
+    say "Log out and pick the Blob session at the login screen."
+    return 0
+  fi
+
+  if systemctl is-active --quiet sddm.service; then
+    say "The login screen is already running."
+    return 0
+  fi
+
+  say "Starting the login screen. Pick the Blob session to log in."
+  as_root systemctl start sddm.service
+}