Commit fd9d5ea09627

@@ -230,7 +230,30 @@ setup_tpm() {
 	fi
 }
 
-# --- Phase 5: unscd for nix NSS resolution ---
+# --- Phase 5: lid-close behavior (systemd-logind) ---
+
+setup_lid() {
+	# Under niri there is no gnome-settings-daemon power plugin, so lid handling
+	# is governed entirely by systemd-logind (dconf/gsettings have no effect).
+	# Ignore lid close on AC and when docked (external monitor use), but still
+	# suspend on battery.
+	log_info "Configuring lid-close behavior (systemd-logind)..."
+
+	sudo install -d /etc/systemd/logind.conf.d
+	sudo tee /etc/systemd/logind.conf.d/10-lid.conf >/dev/null <<-'EOF'
+		[Login]
+		HandleLidSwitch=suspend
+		HandleLidSwitchExternalPower=ignore
+		HandleLidSwitchDocked=ignore
+	EOF
+
+	# logind reads this config on events; reload makes it pick up the new file
+	# without the session disruption a full restart can cause.
+	sudo systemctl reload systemd-logind
+	log_info "Lid behavior: suspend on battery, ignore on AC/docked"
+}
+
+# --- Phase 6: unscd for nix NSS resolution ---
 
 setup_unscd() {
 	# Nix glibc can't load system NSS modules (libnss_sss.so) so nix programs
@@ -379,6 +402,7 @@ main() {
 	setup_wireguard
 	install_native_apps
 	setup_tpm
+	setup_lid
 	setup_unscd
 	setup_home_manager
 	setup_shell