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import getpass, time, json, sys, signal, os
import archinstall
"""
This signal-handler chain (and global variable)
is used to trigger the "Are you sure you want to abort?" question further down.
It might look a bit odd, but have a look at the line: "if SIG_TRIGGER:"
"""
SIG_TRIGGER = False
def kill_handler(sig, frame):
print()
exit(0)
def sig_handler(sig, frame):
global SIG_TRIGGER
SIG_TRIGGER = True
signal.signal(signal.SIGINT, kill_handler)
original_sigint_handler = signal.getsignal(signal.SIGINT)
signal.signal(signal.SIGINT, sig_handler)
if archinstall.arguments.get('help'):
print("See `man archinstall` for help.")
exit(0)
def ask_user_questions():
"""
First, we'll ask the user for a bunch of user input.
Not until we're satisfied with what we want to install
will we continue with the actual installation steps.
"""
if not archinstall.arguments.get('keyboard-language', None):
archinstall.arguments['keyboard-language'] = archinstall.select_language(archinstall.list_keyboard_languages()).strip()
# Before continuing, set the preferred keyboard layout/language in the current terminal.
# This will just help the user with the next following questions.
if len(archinstall.arguments['keyboard-language']):
archinstall.set_keyboard_language(archinstall.arguments['keyboard-language'])
# Set which region to download packages from during the installation
if not archinstall.arguments.get('mirror-region', None):
archinstall.arguments['mirror-region'] = archinstall.select_mirror_regions(archinstall.list_mirrors())
else:
selected_region = archinstall.arguments['mirror-region']
archinstall.arguments['mirror-region'] = {selected_region : archinstall.list_mirrors()[selected_region]}
# Ask which harddrive/block-device we will install to
if archinstall.arguments.get('harddrive', None):
archinstall.arguments['harddrive'] = archinstall.BlockDevice(archinstall.arguments['harddrive'])
else:
archinstall.arguments['harddrive'] = archinstall.select_disk(archinstall.all_disks())
# Perform a quick sanity check on the selected harddrive.
# 1. Check if it has partitions
# 3. Check that we support the current partitions
# 2. If so, ask if we should keep them or wipe everything
if archinstall.arguments['harddrive'].has_partitions():
archinstall.log(f"{archinstall.arguments['harddrive']} contains the following partitions:", fg='yellow')
# We curate a list pf supported partitions
# and print those that we don't support.
partition_mountpoints = {}
for partition in archinstall.arguments['harddrive']:
try:
if partition.filesystem_supported():
archinstall.log(f" {partition}")
partition_mountpoints[partition] = None
except archinstall.UnknownFilesystemFormat as err:
archinstall.log(f" {partition} (Filesystem not supported)", fg='red')
# We then ask what to do with the partitions.
if (option := archinstall.ask_for_disk_layout()) == 'abort':
archinstall.log(f"Safely aborting the installation. No changes to the disk or system has been made.")
exit(1)
elif option == 'keep-existing':
archinstall.arguments['harddrive'].keep_partitions = True
archinstall.log(f" ** You will now select which partitions to use by selecting mount points (inside the installation). **")
archinstall.log(f" ** The root would be a simple / and the boot partition /boot (as all paths are relative inside the installation). **")
while True:
# Select a partition
partition = archinstall.generic_select(partition_mountpoints.keys(),
"Select a partition by number that you want to set a mount-point for (leave blank when done): ")
if not partition:
break
# Select a mount-point
mountpoint = input(f"Enter a mount-point for {partition}: ").strip(' ')
if len(mountpoint):
# Get a valid & supported filesystem for the partition:
while 1:
new_filesystem = input(f"Enter a valid filesystem for {partition} (leave blank for {partition.filesystem}): ").strip(' ')
if len(new_filesystem) <= 0:
if partition.encrypted and partition.filesystem == 'crypto_LUKS':
old_password = archinstall.arguments.get('!encryption-password', None)
if not old_password:
old_password = input(f'Enter the old encryption password for {partition}: ')
if (autodetected_filesystem := partition.detect_inner_filesystem(old_password)):
new_filesystem = autodetected_filesystem
else:
archinstall.log(f"Could not auto-detect the filesystem inside the encrypted volume.", fg='red')
archinstall.log(f"A filesystem must be defined for the unlocked encrypted partition.")
continue
break
# Since the potentially new filesystem is new
# we have to check if we support it. We can do this by formatting /dev/null with the partitions filesystem.
# There's a nice wrapper for this on the partition object itself that supports a path-override during .format()
try:
partition.format(new_filesystem, path='/dev/null', log_formating=False, allow_formatting=True)
except archinstall.UnknownFilesystemFormat:
archinstall.log(f"Selected filesystem is not supported yet. If you want archinstall to support '{new_filesystem}', please create a issue-ticket suggesting it on github at https://github.com/archlinux/archinstall/issues.")
archinstall.log(f"Until then, please enter another supported filesystem.")
continue
except archinstall.SysCallError:
pass # Expected exception since mkfs.<format> can not format /dev/null.
# But that means our .format() function supported it.
break
# When we've selected all three criteria,
# We can safely mark the partition for formatting and where to mount it.
# TODO: allow_formatting might be redundant since target_mountpoint should only be
# set if we actually want to format it anyway.
partition.allow_formatting = True
partition.target_mountpoint = mountpoint
# Only overwrite the filesystem definition if we selected one:
if len(new_filesystem):
partition.filesystem = new_filesystem
archinstall.log('Using existing partition table reported above.')
elif option == 'format-all':
archinstall.arguments['filesystem'] = archinstall.ask_for_main_filesystem_format()
archinstall.arguments['harddrive'].keep_partitions = False
else:
# If the drive doesn't have any partitions, safely mark the disk with keep_partitions = False
# and ask the user for a root filesystem.
archinstall.arguments['filesystem'] = archinstall.ask_for_main_filesystem_format()
archinstall.arguments['harddrive'].keep_partitions = False
# Get disk encryption password (or skip if blank)
if not archinstall.arguments.get('!encryption-password', None):
if (passwd := archinstall.get_password(prompt='Enter disk encryption password (leave blank for no encryption): ')):
archinstall.arguments['!encryption-password'] = passwd
archinstall.arguments['harddrive'].encryption_password = archinstall.arguments['!encryption-password']
# Get the hostname for the machine
if not archinstall.arguments.get('hostname', None):
archinstall.arguments['hostname'] = input('Desired hostname for the installation: ').strip(' ')
# Ask for a root password (optional, but triggers requirement for super-user if skipped)
if not archinstall.arguments.get('!root-password', None):
archinstall.arguments['!root-password'] = archinstall.get_password(prompt='Enter root password (Recommendation: leave blank to leave root disabled): ')
# Ask for additional users (super-user if root pw was not set)
archinstall.arguments['users'] = {}
archinstall.arguments['superusers'] = {}
if not archinstall.arguments.get('!root-password', None):
archinstall.arguments['superusers'] = archinstall.ask_for_superuser_account('Create a required super-user with sudo privileges: ', forced=True)
users, superusers = archinstall.ask_for_additional_users('Enter a username to create a additional user (leave blank to skip & continue): ')
archinstall.arguments['users'] = users
archinstall.arguments['superusers'] = {**archinstall.arguments['superusers'], **superusers}
# Ask for archinstall-specific profiles (such as desktop environments etc)
if not archinstall.arguments.get('profile', None):
archinstall.arguments['profile'] = archinstall.select_profile(archinstall.list_profiles())
else:
archinstall.arguments['profile'] = archinstall.list_profiles()[archinstall.arguments['profile']]
# Check the potentially selected profiles preparations to get early checks if some additional questions are needed.
if archinstall.arguments['profile'] and archinstall.arguments['profile'].has_prep_function():
with archinstall.arguments['profile'].load_instructions(namespace=f"{archinstall.arguments['profile'].namespace}.py") as imported:
if not imported._prep_function():
archinstall.log(
' * Profile\'s preparation requirements was not fulfilled.',
fg='red'
)
exit(1)
# Additional packages (with some light weight error handling for invalid package names)
print("Packages not part of the desktop environment are not installed by default. If you desire a web browser, such as firefox or chromium, you may specify it in the following prompt.")
if not archinstall.arguments.get('packages', None):
archinstall.arguments['packages'] = [package for package in input('Write additional packages to install (space separated, leave blank to skip): ').split(' ') if len(package)]
# Verify packages that were given
try:
archinstall.validate_package_list(archinstall.arguments['packages'])
except archinstall.RequirementError as e:
archinstall.log(e, fg='red')
exit(1)
# Ask or Call the helper function that asks the user to optionally configure a network.
if not archinstall.arguments.get('nic', None):
archinstall.arguments['nic'] = archinstall.ask_to_configure_network()
if not archinstall.arguments['nic']:
archinstall.log(f"No network configuration was selected. Network is going to be unavailable until configured manually!", fg="yellow")
if not archinstall.arguments.get('timezone', None):
archinstall.arguments['timezone'] = archinstall.ask_for_a_timezone()
def perform_installation_steps():
global SIG_TRIGGER
print()
print('This is your chosen configuration:')
archinstall.log("-- Guided template chosen (with below config) --", level=archinstall.LOG_LEVELS.Debug)
archinstall.log(json.dumps(archinstall.arguments, indent=4, sort_keys=True, cls=archinstall.JSON), level=archinstall.LOG_LEVELS.Info)
print()
input('Press Enter to continue.')
"""
Issue a final warning before we continue with something un-revertable.
We mention the drive one last time, and count from 5 to 0.
"""
print(f" ! Formatting {archinstall.arguments['harddrive']} in ", end='')
for i in range(5, 0, -1):
print(f"{i}", end='')
for x in range(4):
sys.stdout.flush()
time.sleep(0.25)
print(".", end='')
if SIG_TRIGGER:
abort = input('\nDo you really want to abort (y/n)? ')
if abort.strip() != 'n':
exit(0)
if SIG_TRIGGER is False:
sys.stdin.read()
SIG_TRIGGER = False
signal.signal(signal.SIGINT, sig_handler)
# Put back the default/original signal handler now that we're done catching
# and interrupting SIGINT with "Do you really want to abort".
print()
signal.signal(signal.SIGINT, original_sigint_handler)
"""
Setup the blockdevice, filesystem (and optionally encryption).
Once that's done, we'll hand over to perform_installation()
"""
with archinstall.Filesystem(archinstall.arguments['harddrive'], archinstall.GPT) as fs:
# Wipe the entire drive if the disk flag `keep_partitions`is False.
if archinstall.arguments['harddrive'].keep_partitions is False:
fs.use_entire_disk(root_filesystem_type=archinstall.arguments.get('filesystem', 'btrfs'))
# Check if encryption is desired and mark the root partition as encrypted.
if archinstall.arguments.get('!encryption-password', None):
root_partition = fs.find_partition('/')
root_partition.encrypted = True
# After the disk is ready, iterate the partitions and check
# which ones are safe to format, and format those.
for partition in archinstall.arguments['harddrive']:
if partition.safe_to_format():
# Partition might be marked as encrypted due to the filesystem type crypt_LUKS
# But we might have omitted the encryption password question to skip encryption.
# In which case partition.encrypted will be true, but passwd will be false.
if partition.encrypted and (passwd := archinstall.arguments.get('!encryption-password', None)):
partition.encrypt(password=passwd)
else:
partition.format()
else:
archinstall.log(f"Did not format {partition} because .safe_to_format() returned False or .allow_formatting was False.", level=archinstall.LOG_LEVELS.Debug)
if archinstall.arguments.get('!encryption-password', None):
# First encrypt and unlock, then format the desired partition inside the encrypted part.
# archinstall.luks2() encrypts the partition when entering the with context manager, and
# unlocks the drive so that it can be used as a normal block-device within archinstall.
with archinstall.luks2(fs.find_partition('/'), 'luksloop', archinstall.arguments.get('!encryption-password', None)) as unlocked_device:
unlocked_device.format(fs.find_partition('/').filesystem)
perform_installation(device=unlocked_device,
boot_partition=fs.find_partition('/boot'),
language=archinstall.arguments['keyboard-language'],
mirrors=archinstall.arguments['mirror-region'])
else:
perform_installation(device=fs.find_partition('/'),
boot_partition=fs.find_partition('/boot'),
language=archinstall.arguments['keyboard-language'],
mirrors=archinstall.arguments['mirror-region'])
def perform_installation(device, boot_partition, language, mirrors):
"""
Performs the installation steps on a block device.
Only requirement is that the block devices are
formatted and setup prior to entering this function.
"""
with archinstall.Installer(device, boot_partition=boot_partition, hostname=archinstall.arguments.get('hostname', 'Archinstall')) as installation:
## if len(mirrors):
# Certain services might be running that affects the system during installation.
# Currently, only one such service is "reflector.service" which updates /etc/pacman.d/mirrorlist
# We need to wait for it before we continue since we opted in to use a custom mirror/region.
installation.log(f'Waiting for automatic mirror selection has completed before using custom mirrors.')
while 'dead' not in (status := archinstall.service_state('reflector')):
time.sleep(1)
archinstall.use_mirrors(mirrors) # Set the mirrors for the live medium
if installation.minimal_installation():
installation.set_mirrors(mirrors) # Set the mirrors in the installation medium
installation.set_keyboard_language(language)
installation.add_bootloader()
# If user selected to copy the current ISO network configuration
# Perform a copy of the config
if archinstall.arguments.get('nic', None) == 'Copy ISO network configuration to installation':
installation.copy_ISO_network_config(enable_services=True) # Sources the ISO network configuration to the install medium.
# Otherwise, if a interface was selected, configure that interface
elif archinstall.arguments.get('nic', None):
installation.configure_nic(**archinstall.arguments.get('nic', {}))
installation.enable_service('systemd-networkd')
installation.enable_service('systemd-resolved')
if archinstall.arguments.get('packages', None) and archinstall.arguments.get('packages', None)[0] != '':
installation.add_additional_packages(archinstall.arguments.get('packages', None))
if archinstall.arguments.get('profile', None):
installation.install_profile(archinstall.arguments.get('profile', None))
for user, user_info in archinstall.arguments.get('users', {}).items():
installation.user_create(user, user_info["!password"], sudo=False)
for superuser, user_info in archinstall.arguments.get('superusers', {}).items():
installation.user_create(superuser, user_info["!password"], sudo=True)
if (timezone := archinstall.arguments.get('timezone', None)):
installation.set_timezone(timezone)
if (root_pw := archinstall.arguments.get('!root-password', None)) and len(root_pw):
installation.user_set_pw('root', root_pw)
ask_user_questions()
perform_installation_steps()
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