Method _add_systemd_bootloader

archinstall/lib/installer.py:1241–1328

(
		self,
		boot_partition: PartitionModification,
		root: PartitionModification | LvmVolume,
		efi_partition: PartitionModification | None,
		uki_enabled: bool = False,
	)

			entry_conf.write_text(entry_template.format(kernel=kernel))

	def _add_systemd_bootloader(
		self,
		boot_partition: PartitionModification,
		root: PartitionModification | LvmVolume,
		efi_partition: PartitionModification | None,
		uki_enabled: bool = False,
	) -> None:
		debug('Installing systemd bootloader')

		self.pacman.strap('efibootmgr')

		if not SysInfo.has_uefi():
			raise HardwareIncompatibilityError

		if not efi_partition:
			raise ValueError('Could not detect EFI system partition')
		elif not efi_partition.mountpoint:
			raise ValueError('EFI system partition is not mounted')

		# TODO: Ideally we would want to check if another config
		# points towards the same disk and/or partition.
		# And in which case we should do some clean up.
		bootctl_options = []

		if boot_partition != efi_partition:
			bootctl_options.append(f'--esp-path={efi_partition.mountpoint}')
			bootctl_options.append(f'--boot-path={boot_partition.mountpoint}')

		# TODO: This is a temporary workaround to deal with https://github.com/archlinux/archinstall/pull/3396#issuecomment-2996862019
		# the systemd_version check can be removed once `--variables=BOOL` is merged into systemd.
		systemd_pkg = installed_package('systemd')

		# keep the version as a str as it can be something like 257.8-2
		if systemd_pkg is not None:
			systemd_version = systemd_pkg.version
		else:
			systemd_version = '257'  # This works as a safety workaround for this hot-fix

		try:
			# Force EFI variables since bootctl detects arch-chroot
			# as a container environment since v257 and skips them silently.
			# https://github.com/systemd/systemd/issues/36174
			if systemd_version >= '258':
				self.arch_chroot(f'bootctl --variables=yes {" ".join(bootctl_options)} install')
			else:
				self.arch_chroot(f'bootctl {" ".join(bootctl_options)} install')
		except SysCallError:
			if systemd_version >= '258':
				# Fallback, try creating the boot loader without touching the EFI variables
				self.arch_chroot(f'bootctl --variables=no {" ".join(bootctl_options)} install')
			else:
				self.arch_chroot(f'bootctl --no-variables {" ".join(bootctl_options)} install')

		# Loader configuration is stored in ESP/loader:
		# https://man.archlinux.org/man/loader.conf.5
		loader_conf = self.target / efi_partition.relative_mountpoint / 'loader/loader.conf'
		# Ensure that the ESP/loader/ directory exists before trying to create a file in it
		loader_conf.parent.mkdir(parents=True, exist_ok=True)