Add accessibility packages to installed system if using the on the live ISO (#760)

* Add group of accesibility tools
* Conditionally extend base packages
* Enable it if accessibility in use in guided
* Fix circular import

archinstall/lib/disk/blockdevice.py

@@ -2,7 +2,6 @@ import os
 import json
 import logging
 import time
-from .helpers import convert_size_to_gb
 from ..exceptions import DiskError
 from ..output import log
 from ..general import SysCommand
@@ -156,6 +155,8 @@ class BlockDevice:
 
 	@property
 	def size(self):
+		from .helpers import convert_size_to_gb
+		
 		output = json.loads(SysCommand(f"lsblk --json -b -o+SIZE {self.path}").decode('UTF-8'))
 
 		for device in output['blockdevices']:

archinstall/lib/installer.py

@@ -25,6 +25,9 @@ from .exceptions import DiskError, ServiceException, RequirementError, HardwareI
 # Any package that the Installer() is responsible for (optional and the default ones)
 __packages__ = ["base", "base-devel", "linux-firmware", "linux", "linux-lts", "linux-zen", "linux-hardened"]
 
+# Additional packages that are installed if the user is running the Live ISO with accessibility tools enabled
+__accessibility_packages__ = ["brltty", "espeakup", "alsa-utils"]
+
 
 class InstallationFile:
 	def __init__(self, installation, filename, owner, mode="w"):
@@ -52,6 +55,10 @@ class InstallationFile:
 		return self.fh.poll(*args)
 
 
+def accessibility_tools_in_use() -> bool:
+	return os.system('systemctl is-active --quiet espeakup.service') == 0
+
+
 class Installer:
 	"""
 	`Installer()` is the wrapper for most basic installation steps.
@@ -96,6 +103,10 @@ class Installer:
 		for kernel in kernels:
 			self.base_packages.append(kernel)
 
+		# If using accessibility tools in the live environment, append those to the packages list
+		if accessibility_tools_in_use():
+			self.base_packages.extend(__accessibility_packages__)
+
 		self.post_base_install = []
 
 		storage['session'] = self
@@ -307,6 +318,10 @@ class Installer:
 		with Boot(self) as session:
 			session.SysCommand(["timedatectl", "set-ntp", 'true'])
 
+	def enable_espeakup(self):
+		self.log('Enabling espeakup.service for speech synthesis (accessibility).', level=logging.INFO)
+		self.enable_service('espeakup')
+
 	def enable_service(self, *services):
 		for service in services:
 			self.log(f'Enabling service {service}', level=logging.INFO)
@@ -448,7 +463,7 @@ class Installer:
 					self.MODULES.append('btrfs')
 				if '/usr/bin/btrfs-progs' not in self.BINARIES:
 					self.BINARIES.append('/usr/bin/btrfs')
-					
+
 			# There is not yet an fsck tool for NTFS. If it's being used for the root filesystem, the hook should be removed.
 			if partition.filesystem == 'ntfs3' and partition.mountpoint == self.target:
 				if 'fsck' in self.HOOKS:
@@ -615,7 +630,7 @@ class Installer:
 					self.helper_flags['bootloader'] = bootloader
 
 		elif bootloader == "grub-install":
-			self.pacstrap('grub') # no need?
+			self.pacstrap('grub')  # no need?
 
 			if real_device := self.detect_encryption(root_partition):
 				root_uuid = SysCommand(f"blkid -s UUID -o value {real_device.path}").decode().rstrip()

examples/guided.py

@@ -334,6 +334,9 @@ def perform_installation(mountpoint):
 			if archinstall.arguments.get('ntp', False):
 				installation.activate_time_syncronization()
 
+			if installation.accessibility_tools_in_use():
+				installation.enable_espeakup()
+
 			if (root_pw := archinstall.arguments.get('!root-password', None)) and len(root_pw):
 				installation.user_set_pw('root', root_pw)