Add os-prober toggle to the bootloader menu

Expose the os_prober option in the bootloader submenu. The item is only
enabled when GRUB is selected and is reset when switching to a
bootloader without os-prober support, mirroring the uki and removable
handling. Regenerate the translation template for the new strings.

archinstall/lib/bootloader/bootloader_menu.py

@@ -41,6 +41,11 @@ class BootloaderMenu(AbstractSubMenu[BootloaderConfiguration]):
 		if not removable_enabled:
 			self._bootloader_conf.removable = False
 
+		# os-prober availability
+		os_prober_enabled = bootloader.has_os_prober_support()
+		if not os_prober_enabled:
+			self._bootloader_conf.os_prober = False
+
 		return [
 			MenuItem(
 				text=tr('Bootloader'),
@@ -66,6 +71,14 @@ class BootloaderMenu(AbstractSubMenu[BootloaderConfiguration]):
 				key='removable',
 				enabled=removable_enabled,
 			),
+			MenuItem(
+				text=tr('Detect other operating systems'),
+				action=self._select_os_prober,
+				value=self._bootloader_conf.os_prober,
+				preview_action=self._prev_os_prober,
+				key='os_prober',
+				enabled=os_prober_enabled,
+			),
 			MenuItem(
 				text=tr('Plymouth'),
 				action=self._select_plymouth,
@@ -92,6 +105,13 @@ class BootloaderMenu(AbstractSubMenu[BootloaderConfiguration]):
 			return tr('Will install to /EFI/BOOT/ (removable location, safe default)')
 		return tr('Will install to custom location with NVRAM entry')
 
+	def _prev_os_prober(self, item: MenuItem) -> str | None:
+		os_prober_text = f'{tr("Detect other operating systems")}'
+		if item.value:
+			return f'{os_prober_text}: {tr("Enabled")}'
+		else:
+			return f'{os_prober_text}: {tr("Disabled")}'
+
 	def _prev_plymouth(self, item: MenuItem) -> str | None:
 		if item.value:
 			return f'{tr("Plymouth")}: {item.value.value}'
@@ -127,6 +147,15 @@ class BootloaderMenu(AbstractSubMenu[BootloaderConfiguration]):
 					self._bootloader_conf.removable = True
 				removable_item.enabled = True
 
+			# Update os-prober option based on bootloader
+			os_prober_item = self._menu_item_group.find_by_key('os_prober')
+			if not bootloader.has_os_prober_support():
+				os_prober_item.enabled = False
+				os_prober_item.value = False
+				self._bootloader_conf.os_prober = False
+			else:
+				os_prober_item.enabled = True
+
 		return bootloader
 
 	async def _select_plymouth(self, preset: PlymouthTheme | None) -> PlymouthTheme | None:
@@ -219,6 +248,19 @@ class BootloaderMenu(AbstractSubMenu[BootloaderConfiguration]):
 			case ResultType.Reset:
 				raise ValueError('Unhandled result type')
 
+	async def _select_os_prober(self, preset: bool) -> bool:
+		prompt = tr('Would you like to enable os-prober to detect other operating systems (e.g. Windows)?') + '\n'
+
+		result = await Confirmation(header=prompt, allow_skip=True, preset=preset).show()
+
+		match result.type_:
+			case ResultType.Skip:
+				return preset
+			case ResultType.Selection:
+				return result.item() == MenuItem.yes()
+			case ResultType.Reset:
+				raise ValueError('Unhandled result type')
+
 
 async def select_bootloader(
 	preset: Bootloader | None,

archinstall/locales/base.pot

@@ -209,6 +209,9 @@ msgstr ""
 msgid "Install to removable location"
 msgstr ""
 
+msgid "Detect other operating systems"
+msgstr ""
+
 msgid "Plymouth"
 msgstr ""
 
@@ -259,6 +262,11 @@ msgstr ""
 msgid "Systems where you want the disk to be bootable on any computer."
 msgstr ""
 
+msgid ""
+"Would you like to enable os-prober to detect other operating systems (e.g. "
+"Windows)?"
+msgstr ""
+
 msgid "Select bootloader to install"
 msgstr ""
 
@@ -906,6 +914,9 @@ msgstr ""
 msgid "Removable"
 msgstr ""
 
+msgid "os-prober enabled"
+msgstr ""
+
 #, python-brace-format
 msgid "Plymouth \"{}\""
 msgstr ""
@@ -1122,6 +1133,15 @@ msgid ""
 "Select any packages from the below list that should be installed additionally"
 msgstr ""
 
+msgid ""
+"Pacman is already running, waiting maximum 10 minutes for it to terminate."
+msgstr ""
+
+msgid ""
+"Pre-existing pacman lock never exited. Please clean up any existing pacman "
+"sessions before using archinstall."
+msgstr ""
+
 #, python-brace-format
 msgid "Enter the number of parallel downloads (1-{})"
 msgstr ""
@@ -1133,15 +1153,6 @@ msgstr ""
 msgid "Enable colored output for pacman"
 msgstr ""
 
-msgid ""
-"Pacman is already running, waiting maximum 10 minutes for it to terminate."
-msgstr ""
-
-msgid ""
-"Pre-existing pacman lock never exited. Please clean up any existing pacman "
-"sessions before using archinstall."
-msgstr ""
-
 msgid "The proprietary Nvidia driver is not supported by Sway."
 msgstr ""