Script to install Arch Linux easy, fast, unattended, automated and customizable way

Writed by on 13/01/2017.
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Arch Linux is one of the most customizable GNU/Linux distributions but whose installation requires reading a good amount of documentation, guides or manuals to know what commands to execute step by step in the prompt of the system in which it leaves you the installation medium. Some users choose a distribution like Antergos, KaOS or Manjaro with a graphical installer and guided simply by the fact that they do not face Arch Linux installation from the command line. Still, executing a command and waiting for it to finish before entering another is slow and requires attention.

Arch Linux

Linux

For a long time, installing a GNU/Linux distribution has no more difficulty than installing an operating system like Windows, which consists of downloading the ISO image from the CD or DVD, burning it to a CD, DVD, or USB stick and start the system with the medium. The distributions recommended for users who come from Windows or macOS or do not have much computer knowledge have graphical or text-based installers and guided in several steps until completing the installation in less than half an hour. Distributions like Ubuntu, elementary OS or Linux Mint make the installation without knowledge and be completed successfully by any user.

Debian installer text mode — Guided graphical and text-based Debian installation

Debian installer in graphical mode — Guided graphical and text-based Debian installation

Other distributions based on different principles and intended users with other needs or preferences may require a little more knowledge in exchange for more advanced settings such as disk partitioning, disk encryption or software that is installed. Some distributions like Arch Linux don’t even provide any installer.

It is targeted at the proficient GNU/Linux user, or anyone with a do-it-yourself attitude who is willing to read the documentation, and solve their own problems.

Article content

System installation with Arch Linux

In Arch Linux with his way of doing things leaves the power to fully customize the system to his needs and preferences limited only by his determination of to get it. It only provides the media to start the installation with starting with a terminal and a system prompt, an installation guide along with the [general recommendations][archlinux-general-recommendations] and one of the best sources of information on GNU/Linux as well as complete information on every aspect that we need in the installation. After having read the relevant pages of the Arch Linux wiki, probably more than once and twice, until you understand it for the most part, you begin to make the recipe that contains the necessary commands until the installation is complete.

In many blogs and YouTube videos there are guides that contain the necessary commands and explanations. Any Arch Linux user with a blog has surely posted an article with their installation guide (yes, I posted mine too). A user who wants to install Arch Linux should read several of those articles in addition to the official installation guide. According to the Arch Linux philosophy, this learning process is considered necessary and allows for greater system understanding.

But knowing the commands to enter to install Arch Linux does not avoid having to type them one after the other and wait for the previous one to finish before entering the next one. Nor does everyone have the time to do it. Several Arch Linux derived distributions such as Antergos, KaOS or Manjaro offer the more friendly graphical and guided installers that attract some users looking to use Arch Linux but not go through its unfriendly installation process. Fortunately, as it is a rolling release distribution (constantly updated), you only have to do a single installation per computer throughout its life of use. But even for Arch Linux users doing a second install on a new machine is tiresome.

A few months ago I met arch-anywhere which is basically a bash script, with a guided and text-based installer that makes the installation of Arch Linux less laborious in a similar way to those existing in other more friendly distributions. However, there are two things that do not convince me about arch-anywhere, one is that it is not unattended, requiring you to answer several questions interactively, wait for it to finish, execute a command according to the previous answer and answer the next question. Another thing that doesn’t convince me is that it uses its own ISO image and not the original Arch Linux image. For the rest, it offers a good level of customization, covering the most common needs of users such as customizing the partitioning, choosing the file system, if you want LVM, encryption, the desktop environment (GNOME, KDE, XFCE, … ), kernel, boot loader (GRUB) and programs to install.

The alis installer and supported features

Based on the idea of arch-anywhere and spending a little time I have created a script in bash to install Arch Linux in an automated, unattended and customizable way to some extent although being useful for the most common configuration cases, without being essential to read a few dozen pages of the Arch Linux wiki or follow any step-by-step guide or tutorial. Some of the functionalities it supports are:

System: UEFI, BIOS
Storage: SATA, NVMe and MMC
Encryption: root partition encrypted and no encrypted
Partition: no LVM, LVM, LVM on LUKS, GPT on UEFI, MBR on BIOS
File system: ext4, btrfs (with subvols), xfs, f2fs, reiserfs
Kernels: linux, linux-lts, linux-hardened, linux-zen
Desktop environment: GNOME, KDE, XFCE, Mate, Cinnamon, LXDE, i3-wm, i3-gaps
Display managers: GDM, SDDM, Lightdm, lxdm
Graphics controller: intel, nvidia and amd with optionally early KMS start. With intel optionally fastboot, hardware video acceleration and framebuffer compression.
Bootloader: GRUB, rEFInd, systemd-boot
Custom shell: bash, zsh, dash, fish
WPA WIFI network installation
Periodic TRIM for SSD storage
Intel and AMD processors microcode
Optional swap file
VirtualBox guest additions
Kernel compression and custom parameters
Users creation and add to sudoers
systemd units enable or disable
Multilib support
Arch Linux common and custom packages installation
Flatpak utility installation and Flatpak packages installation
SDKMAN utility installation and SDKMAN packages installation
AUR utility installation (paru, yay, aurman) and AUR packages installation
Packages installation after base system installation (preferred way of packages installation)
Script for download installation and recovery scripts and configuration files
Retry packages download on connection/mirror error
Packer support for testing in VirtualBox
Installation log with all commands executed and output in a file and/or asciinema video
Wait after installation for an abortable reboot
Fork the repository and use your own configuration

The recommended way to install Arch Linux is by learning which commands to execute and what each one does, first read the official Arch Linux installation guide and understand what the script commands do. This script is not official and therefore in the Arch Linux forum in Spanish or in English they will not be able to give you support although I will help you in the comments of this article if questions. Note that this script removes all information from the installation device. If you try it, leave a comment at the end of the article.

Booted the system with the Arch Linux installation ISO image, you have to download the script, edit some environment variables for the alis configuration and start the installation process. Depending on the preferred desktop environment, if you want LVM, the type of the file system, if you want to encrypt the file system and packages to install, the values of the variables will vary according to the preferences that initially have common values. Two variables that must be modified at least are USER_NAME and USER_PASSWORD with the name of the user and his password that the system will use.

The installation time required varies depending on the internet connection bandwidth and the type of storage, in my case with ADSL with a 1.2 MiB/s download and SSD, the installation of the base system without a desktop environment takes me approximately 10 minutes. With a fiber connection it will take significantly less time. The installation script contains the same commands that would be necessary to perform the manual installation interactively.

Even if alis is not used, the bash code in the script can be viewed as executable documentation or for reference if you choose to install manually. It contains the same commands that a user would manually run one after the other in an interactive installation. alis is a script that allows you to install Arch Linux in an unattended, automated and customizable way from Arch Linux.

These are the commands to use alis and its configuration file with which to customize the installation.

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# loadkeys es
# curl -sL https://bit.ly/2F3CATp | bash
# vim alis.conf
# ./alis.sh

alis-install.sh

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# Arch Linux Install Script (alis) configuration file
#
# Some variables values are preceded by a ! character, this means that the value is ignored.
# Some variables accept a single value others accept multiple values as annotated in the comments.
# Some variables are boolean with a value of true or false.
#
# Read the Arch Linux wiki pages to learn more about the variables values.
# https://github.com/picodotdev/alis/blob/master/README.md

# init
## KEYS sets keyboard layout.
## LOG generates a log file with the commands executed and output generated during installation.
### The log file is saved to /var/log/alis.log.
KEYS="es"
LOG="false"

# partition
## DEVICE sets which is the device for the installation.
## DEVICE_TRIM sets if the DEVICE device supports TRIM feature.
## LVM sets if the DEVICE is partitioned with LVM partition scheme.
## LUKS_PASSWORD and LUKS_PASSWORD_RETYPE if set is the password for encrypt the device. With LVM, LVM on LUKS is used. If "ask" password alis asks for a secure password.
## FILE_SYSTEM_TYPE root device is formatted with this file system type.
## SWAP_SIZE swap file size with a size of the value in megabytes. If no value no swap file is created.
## PARTITION_MODE how partition is performed on DEVICE.
### "auto" value deletes all existing partitions and creates a boot partition and a root partition using disk full size.
### Warning! all disk data will be lost, so backup existing data before.
### "custom" value allows to use a custom parted partition script.
### "manual" allows to specify which existing partitions are used for boot partition and root partition.
DEVICE="/dev/sda !/dev/nvme0n1 !/dev/mmcblk0" # sata nvme mmc (single)
DEVICE_TRIM="true"
LVM="false"
LUKS_PASSWORD=""
LUKS_PASSWORD_RETYPE=""
FILE_SYSTEM_TYPE="ext4 !btrfs !xfs !f2fs !reiserfs" # (single)
SWAP_SIZE="!2048 !4096 !8192" # (single)
PARTITION_MODE="auto !custom !manual"
PARTITION_CUSTOM_PARTED_UEFI="mklabel gpt mkpart ESP fat32 1MiB 512MiB mkpart root $FILE_SYSTEM_TYPE 512MiB 100% set 1 esp on"
PARTITION_CUSTOM_PARTED_BIOS="mklabel msdos mkpart primary ext4 4MiB 512MiB mkpart primary $FILE_SYSTEM_TYPE 512MiB 100% set 1 boot on"
PARTITION_CUSTOMMANUAL_BOOT="!/dev/sda1 !/dev/nvme0n1p1 !/dev/mmcblk0p1"
PARTITION_CUSTOMMANUAL_ROOT="!/dev/sda2 !/dev/nvme0n1p2 !/dev/mmcblk0p2"

# network_install
## Variables to setup the WIFI connection to internet.
## The WIFI interface, WIFI ESSID identifier and WIFI password must be specified. If "ask" password alis asks for a secure password.
## PING_HOSTNAME is the host to check the internet connection.
WIFI_INTERFACE=""
WIFI_ESSID=""
WIFI_KEY="ask"
WIFI_KEY_RETYPE="ask"
PING_HOSTNAME="mirrors.kernel.org"

# install
## REFLECTOR allows to use reflector utility to use the best mirrors for packages download.
## REFLECTOR_COUNTRIES is an array of countries to select mirrors from.
## PACMAN_MIRROR if reflector is not used this specific mirror is used.
## KERNELS additional kernels and headers to install.
## KERNELS_COMPRESSION selects de algorithm for kernel compression.
## KERNELS_PARAMETERS specific kernel parameters to set on boot. eg. iommu=soft
REFLECTOR="false"
REFLECTOR_COUNTRIES=("Spain")
PACMAN_MIRROR="https://mirrors.kernel.org/archlinux/\$repo/os/\$arch"
KERNELS="!linux-lts !linux-lts-headers !linux-hardened !linux-hardened-headers !linux-zen !linux-zen-headers" # (multiple)
KERNELS_COMPRESSION="!gzip !bzip2 !lzma !xz !lzop !lz4 zstd"
KERNELS_PARAMETERS=""

# display driver
## DISPLAY_DRIVER installs a specific display driver, you must know which brand is the graphics hardware.
## Other variables activates some features if are supported for the DISPLAY_DRIVER.
DISPLAY_DRIVER="!intel !amdgpu !ati !nvidia !nvidia-lts !nvidia-dkms !nvidia-390xx !nvidia-390xx-lts !nvidia-390xx-dkms !nouveau" # (single)
KMS="true"
FASTBOOT="true"
FRAMEBUFFER_COMPRESSION="true"
DISPLAY_DRIVER_DDX="false"
VULKAN="true"
DISPLAY_DRIVER_HARDWARE_ACCELERATION="true"
DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL="intel-media-driver !libva-intel-driver" # (single)

# config
## Some variables for system configuration, from timezone, locale and keyboard to the root password.
## ROOT_PASSWORD root user password. If "ask" password alis asks for a secure password.
TIMEZONE="/usr/share/zoneinfo/Europe/Madrid"
LOCALES=("es_ES.UTF-8 UTF-8" "en_US.UTF-8 UTF-8")
LOCALE_CONF=("LANG=es_ES.UTF-8" "LANGUAGE=es_ES:es:en_US:en")
KEYMAP="KEYMAP=es"
KEYLAYOUT="es"
KEYMODEL=""
KEYVARIANT=""
KEYOPTIONS=""
FONT=""
FONT_MAP=""
HOSTNAME="archlinux"
ROOT_PASSWORD="ask"
ROOT_PASSWORD_RETYPE="ask"

# user
## USER_NAME, USER_PASSWORD Regular user to create in the system. A password must be specified, if "ask" password alis asks for a secure password.
## ADDITIONAL_USERS is an array of additional users to create in the system, if "ask" password alis asks for a secure password.
USER_NAME="picodotdev"
USER_PASSWORD="ask"
USER_PASSWORD_RETYPE="ask"
ADDITIONAL_USERS=() # eg. ("user1=password1" "user2=password2")

## systemd-homed (experimental feature)
### SYSTEMD_HOMED "true" value requires interactivity to set user password
SYSTEMD_HOMED="false"
SYSTEMD_HOMED_STORAGE="directory !fscrypt !luks !cifs !subvolume"
SYSTEMD_HOMED_CIFS_DOMAIN=""
SYSTEMD_HOMED_CIFS_SERVICE=""

# mkinitcpio
## HOOKS are the system hooks to execute to build the initial ramdisk.
### Generally, it is not necessary to modify, alis enables or disables some hooks
### taking in account other variables values like bootloader or device encryption.
HOOKS="base !udev !usr !resume !systemd !btrfs keyboard autodetect modconf block !net !dmraid !mdadm !mdadm_udev !keymap !consolefont !sd-vconsole !encrypt !lvm2 !sd-encrypt !sd-lvm2 fsck filesystems"

# bootloader
## BOOTLOADER system boot loader.
BOOTLOADER="!grub !refind systemd" # (single)

# shell
## CUSTOM_SHELL configures an alternative custom shell interpreter.
CUSTOM_SHELL="bash !zsh !dash !fish" # (single)

# desktop
## DESKTOP_ENVIRONMENT installs a desktop environment.
DESKTOP_ENVIRONMENT="!gnome !kde !xfce !mate !cinnamon !lxde !i3-wm !i3-gaps" # (single)

# packages (all multiple)
## PACKAGES_MULTILIB configures multilib repository for pacman and install multilib packages for display driver
## PACKAGES_INSTALL installs packages on system installation, edit alis-packages.conf to select packages.
### It is recommended to install packages after base installation and reboot.
PACKAGES_MULTILIB="false"
PACKAGES_INSTALL="false"

# misc
## VAGRANT for build a VirtualBox OVA with Packer
VAGRANT="false"

# systemd
## SYSTEMD_UNITS systemd units to enable or disable.
### If preceded with a "+" unit is enabled, if preceded with "-" unit is disabled, if preceded with "!" unit is ignored (no action is performed).
### eg. "+ufw.service" to enable, "-ufw.service" to disable, "!ufw.service" to ignore
SYSTEMD_UNITS="!ufw.service !docker.service"

# reboot
## REBOOT on installation end reboots the system automatically. If "false" no reboot is performed and the user must do it explicitly.
REBOOT="true"

alis.conf

Screenshots of different supported desktop environments

These are some screenshots with different desktop environments that I have tested with VirtualBox.

XFCE — Xfce and Cinnamon desktop environments

Password request to decrypt root partition

Installation video of the base system with alis

The following video captured with asciinema shows how using alis to install Arch Linux on a computer with the complete process of the basic system installation.

Alis source code

The installer code is not very complicated and much simpler than other similar interactive scripts, as it does not mix the installation commands with the interactive messages that ask questions and wait for answers, also after setting the variables and starting the installation process the it is done unattended until completed without requiring the user to enter more data interactively.

The commands that I have compiled from the recipe are the ones that we would execute one after another starting from the original Arch Linux installation media. The main function contains the steps that the installation consists of, from partitioning and encrypting the disk to restarting after the installation is complete, the rest of the functions the commands of that installation step.

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#!/usr/bin/env bash
set -e

# Arch Linux Install Script (alis) installs unattended, automated
# and customized Arch Linux system.
# Copyright (C) 2021 picodotdev

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

# This script is hosted at https://github.com/picodotdev/alis. For new features,
# improvements and bugs fill an issue in GitHub or make a pull request.
# Pull Request are welcome!
#
# If you test it in real hardware please send me an email to pico.dev@gmail.com with
# the machine description and tell me if somethig goes wrong or all works fine.
#
# Please, don't ask for support for this script in Arch Linux forums, first read
# the Arch Linux wiki [1], the Installation Guide [2] and the General
# Recomendations [3], later compare the commands with those of this script.
#
# [1] https://wiki.archlinux.org
# [2] https://wiki.archlinux.org/index.php/Installation_guide
# [3] https://wiki.archlinux.org/index.php/General_recommendations

# Usage:
# # loadkeys es
# # iwctl --passphrase "[WIFI_KEY]" station [WIFI_INTERFACE] connect "[WIFI_ESSID]"          # (Optional) Connect to WIFI network. _ip link show_ to know WIFI_INTERFACE.
# # curl https://raw.githubusercontent.com/picodotdev/alis/master/download.sh | bash, curl https://raw.githubusercontent.com/picodotdev/alis/master/download.sh | bash -s -- -u [github user], or with URL shortener curl -sL https://bit.ly/2F3CATp | bash
# # vim alis.conf
# # ./alis.sh

# global variables (no configuration, don't edit)
ASCIINEMA=""
BIOS_TYPE=""
PARTITION_BOOT=""
PARTITION_ROOT=""
PARTITION_BOOT_NUMBER=""
PARTITION_ROOT_NUMBER=""
DEVICE_ROOT=""
DEVICE_LVM=""
LUKS_DEVICE_NAME="cryptroot"
LVM_VOLUME_GROUP="vg"
LVM_VOLUME_LOGICAL="root"
SWAPFILE="/swapfile"
BOOT_DIRECTORY=""
ESP_DIRECTORY=""
#PARTITION_BOOT_NUMBER=0
UUID_BOOT=""
UUID_ROOT=""
PARTUUID_BOOT=""
PARTUUID_ROOT=""
DEVICE_SATA=""
DEVICE_NVME=""
DEVICE_MMC=""
CPU_VENDOR=""
VIRTUALBOX=""
CMDLINE_LINUX_ROOT=""
CMDLINE_LINUX=""

CONF_FILE="alis.conf"
GLOBALS_FILE="alis-globals.conf"
LOG_FILE="alis.log"
ASCIINEMA_FILE="alis.asciinema"

RED='\033[0;31m'
GREEN='\033[0;32m'
LIGHT_BLUE='\033[1;34m'
NC='\033[0m'

function configuration_install() {
    source "$CONF_FILE"
}

function sanitize_variables() {
    DEVICE=$(sanitize_variable "$DEVICE")
    PARTITION_MODE=$(sanitize_variable "$PARTITION_MODE")
    PARTITION_CUSTOM_PARTED_UEFI=$(sanitize_variable "$PARTITION_CUSTOM_PARTED_UEFI")
    PARTITION_CUSTOM_PARTED_BIOS=$(sanitize_variable "$PARTITION_CUSTOM_PARTED_BIOS")
    PARTITION_CUSTOMMANUAL_BOOT=$(sanitize_variable "$PARTITION_CUSTOMMANUAL_BOOT")
    PARTITION_CUSTOMMANUAL_ROOT=$(sanitize_variable "$PARTITION_CUSTOMMANUAL_ROOT")
    FILE_SYSTEM_TYPE=$(sanitize_variable "$FILE_SYSTEM_TYPE")
    SWAP_SIZE=$(sanitize_variable "$SWAP_SIZE")
    KERNELS=$(sanitize_variable "$KERNELS")
    KERNELS_COMPRESSION=$(sanitize_variable "$KERNELS_COMPRESSION")
    SYSTEMD_HOMED_STORAGE=$(sanitize_variable "$SYSTEMD_HOMED_STORAGE")
    BOOTLOADER=$(sanitize_variable "$BOOTLOADER")
    CUSTOM_SHELL=$(sanitize_variable "$CUSTOM_SHELL")
    DESKTOP_ENVIRONMENT=$(sanitize_variable "$DESKTOP_ENVIRONMENT")
    DISPLAY_DRIVER=$(sanitize_variable "$DISPLAY_DRIVER")
    DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL=$(sanitize_variable "$DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL")
    SYSTEMD_UNITS=$(sanitize_variable "$SYSTEMD_UNITS")
}

function sanitize_variable() {
    VARIABLE=$1
    VARIABLE=$(echo $VARIABLE | sed "s/![^ ]*//g") # remove disabled
    VARIABLE=$(echo $VARIABLE | sed "s/ {2,}/ /g") # remove unnecessary white spaces
    VARIABLE=$(echo $VARIABLE | sed 's/^[[:space:]]*//') # trim leading
    VARIABLE=$(echo $VARIABLE | sed 's/[[:space:]]*$//') # trim trailing
    echo "$VARIABLE"
}

function check_variables() {
    check_variables_value "KEYS" "$KEYS"
    check_variables_boolean "LOG" "$LOG"
    check_variables_value "DEVICE" "$DEVICE"
    check_variables_boolean "DEVICE_TRIM" "$DEVICE_TRIM"
    check_variables_boolean "LVM" "$LVM"
    check_variables_equals "LUKS_PASSWORD" "LUKS_PASSWORD_RETYPE" "$LUKS_PASSWORD" "$LUKS_PASSWORD_RETYPE"
    check_variables_list "FILE_SYSTEM_TYPE" "$FILE_SYSTEM_TYPE" "ext4 btrfs xfs f2fs reiserfs"
    check_variables_list "PARTITION_MODE" "$PARTITION_MODE" "auto custom manual" "true"
    if [ "$PARTITION_MODE" == "custom" ]; then
        check_variables_value "PARTITION_CUSTOM_PARTED_UEFI" "$PARTITION_CUSTOM_PARTED_UEFI"
        check_variables_value "PARTITION_CUSTOM_PARTED_BIOS" "$PARTITION_CUSTOM_PARTED_BIOS"
    fi
    if [ "$PARTITION_MODE" == "custom" -o "$PARTITION_MODE" == "manual" ]; then
        check_variables_value "PARTITION_CUSTOMMANUAL_BOOT" "$PARTITION_CUSTOMMANUAL_BOOT"
        check_variables_value "PARTITION_CUSTOMMANUAL_ROOT" "$PARTITION_CUSTOMMANUAL_ROOT"
    fi
    if [ "$LVM" == "true" ]; then
        check_variables_list "PARTITION_MODE" "$PARTITION_MODE" "auto" "true"
    fi
    check_variables_equals "WIFI_KEY" "WIFI_KEY_RETYPE" "$WIFI_KEY" "$WIFI_KEY_RETYPE"
    check_variables_value "PING_HOSTNAME" "$PING_HOSTNAME"
    check_variables_value "PACMAN_MIRROR" "$PACMAN_MIRROR"
    check_variables_list "KERNELS" "$KERNELS" "linux-lts linux-lts-headers linux-hardened linux-hardened-headers linux-zen linux-zen-headers" "false"
    check_variables_list "KERNELS_COMPRESSION" "$KERNELS_COMPRESSION" "gzip bzip2 lzma xz lzop lz4 zstd" "false"
    check_variables_list "DISPLAY_DRIVER" "$DISPLAY_DRIVER" "intel amdgpu ati nvidia nvidia-lts nvidia-dkms nvidia-390xx nvidia-390xx-lts nvidia-390xx-dkms nouveau" "false"
    check_variables_boolean "KMS" "$KMS"
    check_variables_boolean "FASTBOOT" "$FASTBOOT"
    check_variables_boolean "FRAMEBUFFER_COMPRESSION" "$FRAMEBUFFER_COMPRESSION"
    check_variables_boolean "DISPLAY_DRIVER_DDX" "$DISPLAY_DRIVER_DDX"
    check_variables_boolean "DISPLAY_DRIVER_HARDWARE_ACCELERATION" "$DISPLAY_DRIVER_HARDWARE_ACCELERATION"
    check_variables_list "DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL" "$DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL" "intel-media-driver libva-intel-driver" "false"
    check_variables_value "TIMEZONE" "$TIMEZONE"
    check_variables_boolean "REFLECTOR" "$REFLECTOR"
    check_variables_value "PACMAN_MIRROR" "$PACMAN_MIRROR"
    check_variables_value "LOCALES" "$LOCALES"
    check_variables_value "LOCALE_CONF" "$LOCALE_CONF"
    check_variables_value "LANG" "$LANG"
    check_variables_value "KEYMAP" "$KEYMAP"
    check_variables_value "HOSTNAME" "$HOSTNAME"
    check_variables_value "USER_NAME" "$USER_NAME"
    check_variables_value "USER_PASSWORD" "$USER_PASSWORD"
    check_variables_equals "ROOT_PASSWORD" "ROOT_PASSWORD_RETYPE" "$ROOT_PASSWORD" "$ROOT_PASSWORD_RETYPE"
    check_variables_equals "USER_PASSWORD" "USER_PASSWORD_RETYPE" "$USER_PASSWORD" "$USER_PASSWORD_RETYPE"
    check_variables_boolean "SYSTEMD_HOMED" "$SYSTEMD_HOMED"
    if [ "$SYSTEMD_HOMED" == "true" ]; then
        check_variables_list "SYSTEMD_HOMED_STORAGE" "$SYSTEMD_HOMED_STORAGE" "directory fscrypt luks cifs subvolume" "true"

        if [ "$SYSTEMD_HOMED_STORAGE" == "fscrypt" ]; then
            check_variables_list "FILE_SYSTEM_TYPE" "$FILE_SYSTEM_TYPE" "ext4 f2fs" "true"
        fi
        if [ "$SYSTEMD_HOMED_STORAGE" == "cifs" ]; then
            check_variables_value "SYSTEMD_HOMED_CIFS_DOMAIN" "$SYSTEMD_HOMED_CIFS_DOMAIN"
            check_variables_value "SYSTEMD_HOMED_CIFS_SERVICE" "$SYSTEMD_HOMED_CIFS_SERVICE"
        fi
    fi
    check_variables_value "HOOKS" "$HOOKS"
    check_variables_list "BOOTLOADER" "$BOOTLOADER" "grub refind systemd"
    check_variables_list "CUSTOM_SHELL" "$CUSTOM_SHELL" "bash zsh dash fish"
    check_variables_list "DESKTOP_ENVIRONMENT" "$DESKTOP_ENVIRONMENT" "gnome kde xfce mate cinnamon lxde i3-wm i3-gaps" "false"
    check_variables_boolean "PACKAGES_MULTILIB" "$PACKAGES_MULTILIB"
    check_variables_boolean "PACKAGES_INSTALL" "$PACKAGES_INSTALL"
    check_variables_boolean "VAGRANT" "$VAGRANT"
    check_variables_boolean "REBOOT" "$REBOOT"
}

function check_variables_value() {
    NAME=$1
    VALUE=$2
    if [ -z "$VALUE" ]; then
        echo "$NAME environment variable must have a value."
        exit
    fi
}

function check_variables_boolean() {
    NAME=$1
    VALUE=$2
    check_variables_list "$NAME" "$VALUE" "true false"
}

function check_variables_list() {
    NAME=$1
    VALUE=$2
    VALUES=$3
    REQUIRED=$4
    if [ "$REQUIRED" == "" -o "$REQUIRED" == "true" ]; then
        check_variables_value "$NAME" "$VALUE"
    fi

    if [ "$VALUE" != "" -a -z "$(echo "$VALUES" | grep -F -w "$VALUE")" ]; then
        echo "$NAME environment variable value [$VALUE] must be in [$VALUES]."
        exit
    fi
}

function check_variables_equals() {
    NAME1=$1
    NAME2=$2
    VALUE1=$3
    VALUE2=$4
    if [ "$VALUE1" != "$VALUE2" ]; then
        echo "$NAME1 and $NAME2 must be equal [$VALUE1, $VALUE2]."
        exit
    fi
}

function check_variables_size() {
    NAME=$1
    SIZE_EXPECT=$2
    SIZE=$3
    if [ "$SIZE_EXPECT" != "$SIZE" ]; then
        echo "$NAME array size [$SIZE] must be [$SIZE_EXPECT]."
        exit
    fi
}

function warning() {
    echo -e "${LIGHT_BLUE}Welcome to Arch Linux Install Script${NC}"
    echo ""
    echo -e "${RED}Warning"'!'"${NC}"
    echo -e "${RED}This script deletes all partitions of the persistent${NC}"
    echo -e "${RED}storage and continuing all your data in it will be lost.${NC}"
    echo ""
    read -p "Do you want to continue? [y/N] " yn
    case $yn in
        [Yy]* )
            ;;
        [Nn]* )
            exit
            ;;
        * )
            exit
            ;;
    esac
}

function init() {
    print_step "init()"

    init_log
    loadkeys $KEYS
}

function init_log() {
    if [ "$LOG" == "true" ]; then
        exec > >(tee -a $LOG_FILE)
        exec 2> >(tee -a $LOG_FILE >&2)
    fi
    set -o xtrace
}

function facts() {
    print_step "facts()"

    if [ -d /sys/firmware/efi ]; then
        BIOS_TYPE="uefi"
    else
        BIOS_TYPE="bios"
    fi

    if [ -f "$ASCIINEMA_FILE" ]; then
        ASCIINEMA="true"
    else
        ASCIINEMA="false"
    fi

    DEVICE_SATA="false"
    DEVICE_NVME="false"
    DEVICE_MMC="false"
    if [ -n "$(echo $DEVICE | grep "^/dev/[a-z]d[a-z]")" ]; then
        DEVICE_SATA="true"
    elif [ -n "$(echo $DEVICE | grep "^/dev/nvme")" ]; then
        DEVICE_NVME="true"
    elif [ -n "$(echo $DEVICE | grep "^/dev/mmc")" ]; then
        DEVICE_MMC="true"
    fi

    if [ -n "$(lscpu | grep GenuineIntel)" ]; then
        CPU_VENDOR="intel"
    elif [ -n "$(lscpu | grep AuthenticAMD)" ]; then
        CPU_VENDOR="amd"
    fi

    if [ -n "$(lspci | grep -i virtualbox)" ]; then
        VIRTUALBOX="true"
    fi
}

function checks() {
    print_step "checks()"

    check_facts
}

function check_facts() {
    if [ "$BIOS_TYPE" == "bios" ]; then
        check_variables_list "BOOTLOADER" "$BOOTLOADER" "grub"
    fi
}

function prepare() {
    print_step "prepare()"

    configure_reflector
    configure_time
    prepare_partition
    ask_passwords
    configure_network
}

function configure_reflector() {
    if [ "$REFLECTOR" == "false" ]; then
        systemctl stop reflector.service
    fi
}

function configure_time() {
    timedatectl set-ntp true
}

function prepare_partition() {
    if [ -d /mnt/boot ]; then
        umount /mnt/boot
        umount /mnt
    fi
    if [ -e "/dev/mapper/$LVM_VOLUME_GROUP-$LVM_VOLUME_LOGICAL" ]; then
        umount "/dev/mapper/$LVM_VOLUME_GROUP-$LVM_VOLUME_LOGICAL"
    fi
    if [ -e "/dev/mapper/$LUKS_DEVICE_NAME" ]; then
        cryptsetup close $LUKS_DEVICE_NAME
    fi
}

function ask_passwords() {
    if [ "$LUKS_PASSWORD" == "ask" ]; then
        PASSWORD_TYPED="false"
        while [ "$PASSWORD_TYPED" != "true" ]; do
            read -sp 'Type LUKS password: ' LUKS_PASSWORD
            echo ""
            read -sp 'Retype LUKS password: ' LUKS_PASSWORD_RETYPE
            echo ""
            if [ "$LUKS_PASSWORD" == "$LUKS_PASSWORD_RETYPE" ]; then
                PASSWORD_TYPED="true"
            else
                echo "LUKS password don't match. Please, type again."
            fi
        done
    fi

    if [ -n "$WIFI_INTERFACE" -a "$WIFI_KEY" == "ask" ]; then
        PASSWORD_TYPED="false"
        while [ "$PASSWORD_TYPED" != "true" ]; do
            read -sp 'Type WIFI key: ' WIFI_KEY
            echo ""
            read -sp 'Retype WIFI key: ' WIFI_KEY_RETYPE
            echo ""
            if [ "$WIFI_KEY" == "$WIFI_KEY_RETYPE" ]; then
                PASSWORD_TYPED="true"
            else
                echo "WIFI key don't match. Please, type again."
            fi
        done
    fi

    if [ "$ROOT_PASSWORD" == "ask" ]; then
        PASSWORD_TYPED="false"
        while [ "$PASSWORD_TYPED" != "true" ]; do
            read -sp 'Type root password: ' ROOT_PASSWORD
            echo ""
            read -sp 'Retype root password: ' ROOT_PASSWORD_RETYPE
            echo ""
            if [ "$ROOT_PASSWORD" == "$ROOT_PASSWORD_RETYPE" ]; then
                PASSWORD_TYPED="true"
            else
                echo "Root password don't match. Please, type again."
            fi
        done
    fi

    if [ "$USER_PASSWORD" == "ask" ]; then
        PASSWORD_TYPED="false"
        while [ "$PASSWORD_TYPED" != "true" ]; do
            read -sp 'Type user password: ' USER_PASSWORD
            echo ""
            read -sp 'Retype user password: ' USER_PASSWORD_RETYPE
            echo ""
            if [ "$USER_PASSWORD" == "$USER_PASSWORD_RETYPE" ]; then
                PASSWORD_TYPED="true"
            else
                echo "User password don't match. Please, type again."
            fi
        done
    fi

    for I in ${!ADDITIONAL_USERS[@]}; do
        VALUE=${ADDITIONAL_USERS[${I}]}
        IFS='=' S=($VALUE)
        USER=${S[0]}
        PASSWORD=${S[1]}
        PASSWORD_RETYPE=""

        if [ "$PASSWORD" == "ask" ]; then
            PASSWORD_TYPED="false"
            while [ "$PASSWORD_TYPED" != "true" ]; do
                read -sp "Type user ($USER) password: " PASSWORD
                echo ""
                read -sp "Retype user ($USER) password: " PASSWORD_RETYPE
                echo ""
                if [ "$PASSWORD" == "$PASSWORD_RETYPE" ]; then
                    PASSWORD_TYPED="true"
                    ADDITIONAL_USERS[${I}]="${USER}=${PASSWORD}"
                else
                    echo "User ($USER) password don't match. Please, type again."
                fi
            done
        fi
    done
}

function configure_network() {
    if [ -n "$WIFI_INTERFACE" ]; then
        iwctl --passphrase "$WIFI_KEY" station $WIFI_INTERFACE connect "$WIFI_ESSID"
        sleep 10
    fi

    # only one ping -c 1, ping gets stuck if -c 5
    ping -c 1 -i 2 -W 5 -w 30 $PING_HOSTNAME
    if [ $? -ne 0 ]; then
        echo "Network ping check failed. Cannot continue."
        exit
    fi
}

function partition() {
    print_step "partition()"

    partprobe $DEVICE

    # setup
    if [ "$PARTITION_MODE" == "auto" ]; then
        PARTITION_PARTED_FILE_SYSTEM_TYPE="$FILE_SYSTEM_TYPE"
        if [ "$PARTITION_PARTED_FILE_SYSTEM_TYPE" == "f2fs" ]; then
            PARTITION_PARTED_FILE_SYSTEM_TYPE=""
        fi
        PARTITION_PARTED_UEFI="mklabel gpt mkpart ESP fat32 1MiB 512MiB mkpart root $PARTITION_PARTED_FILE_SYSTEM_TYPE 512MiB 100% set 1 esp on"
        PARTITION_PARTED_BIOS="mklabel msdos mkpart primary ext4 4MiB 512MiB mkpart primary $PARTITION_PARTED_FILE_SYSTEM_TYPE 512MiB 100% set 1 boot on"

        if [ "$BIOS_TYPE" == "uefi" ]; then
            if [ "$DEVICE_SATA" == "true" ]; then
                PARTITION_BOOT="${DEVICE}1"
                PARTITION_ROOT="${DEVICE}2"
                DEVICE_ROOT="${DEVICE}2"
            fi

            if [ "$DEVICE_NVME" == "true" ]; then
                PARTITION_BOOT="${DEVICE}p1"
                PARTITION_ROOT="${DEVICE}p2"
                DEVICE_ROOT="${DEVICE}p2"
            fi

            if [ "$DEVICE_MMC" == "true" ]; then
                PARTITION_BOOT="${DEVICE}p1"
                PARTITION_ROOT="${DEVICE}p2"
                DEVICE_ROOT="${DEVICE}p2"
            fi
        fi

        if [ "$BIOS_TYPE" == "bios" ]; then
            if [ "$DEVICE_SATA" == "true" ]; then
                PARTITION_BOOT="${DEVICE}1"
                PARTITION_ROOT="${DEVICE}2"
                DEVICE_ROOT="${DEVICE}2"
            fi

            if [ "$DEVICE_NVME" == "true" ]; then
                PARTITION_BOOT="${DEVICE}p1"
                PARTITION_ROOT="${DEVICE}p2"
                DEVICE_ROOT="${DEVICE}p2"
            fi

            if [ "$DEVICE_MMC" == "true" ]; then
                PARTITION_BOOT="${DEVICE}p1"
                PARTITION_ROOT="${DEVICE}p2"
                DEVICE_ROOT="${DEVICE}p2"
            fi
        fi
    elif [ "$PARTITION_MODE" == "custom" ]; then
        PARTITION_PARTED_UEFI="$PARTITION_CUSTOM_PARTED_UEFI"
        PARTITION_PARTED_BIOS="$PARTITION_CUSTOM_PARTED_BIOS"
    fi

    if [ "$PARTITION_MODE" == "custom" -o "$PARTITION_MODE" == "manual" ]; then
        PARTITION_BOOT="$PARTITION_CUSTOMMANUAL_BOOT"
        PARTITION_ROOT="$PARTITION_CUSTOMMANUAL_ROOT"
        DEVICE_ROOT="${PARTITION_ROOT}"
    fi

    PARTITION_BOOT_NUMBER="$PARTITION_BOOT"
    PARTITION_ROOT_NUMBER="$PARTITION_ROOT"
    PARTITION_BOOT_NUMBER="${PARTITION_BOOT_NUMBER//\/dev\/sda/}"
    PARTITION_BOOT_NUMBER="${PARTITION_BOOT_NUMBER//\/dev\/nvme0n1p/}"
    PARTITION_BOOT_NUMBER="${PARTITION_BOOT_NUMBER//\/dev\/mmcblk0p/}"
    PARTITION_ROOT_NUMBER="${PARTITION_ROOT_NUMBER//\/dev\/sda/}"
    PARTITION_ROOT_NUMBER="${PARTITION_ROOT_NUMBER//\/dev\/nvme0n1p/}"
    PARTITION_ROOT_NUMBER="${PARTITION_ROOT_NUMBER//\/dev\/mmcblk0p/}"

    # partition
    if [ "$PARTITION_MODE" == "auto" ]; then
        sgdisk --zap-all $DEVICE
        wipefs -a -f $DEVICE
        partprobe $DEVICE
    fi

    if [ "$PARTITION_MODE" == "auto" -o "$PARTITION_MODE" == "custom" ]; then
        if [ "$BIOS_TYPE" == "uefi" ]; then
            parted -s $DEVICE $PARTITION_PARTED_UEFI
            if [ -n "$LUKS_PASSWORD" ]; then
                sgdisk -t=$PARTITION_ROOT_NUMBER:8309 $DEVICE
            elif [ "$LVM" == "true" ]; then
                sgdisk -t=$PARTITION_ROOT_NUMBER:8e00 $DEVICE
            fi
        fi

        if [ "$BIOS_TYPE" == "bios" ]; then
            parted -s $DEVICE $PARTITION_PARTED_BIOS
        fi

        partprobe $DEVICE
    fi

    # luks and lvm
    if [ -n "$LUKS_PASSWORD" ]; then
        echo -n "$LUKS_PASSWORD" | cryptsetup --key-size=512 --key-file=- luksFormat --type luks2 $PARTITION_ROOT
        echo -n "$LUKS_PASSWORD" | cryptsetup --key-file=- open $PARTITION_ROOT $LUKS_DEVICE_NAME
        sleep 5
    fi

    if [ "$LVM" == "true" ]; then
        if [ -n "$LUKS_PASSWORD" ]; then
            DEVICE_LVM="/dev/mapper/$LUKS_DEVICE_NAME"
        else
            DEVICE_LVM="$DEVICE_ROOT"
        fi

        pvcreate $DEVICE_LVM
        vgcreate $LVM_VOLUME_GROUP $DEVICE_LVM
        lvcreate -l 100%FREE -n $LVM_VOLUME_LOGICAL $LVM_VOLUME_GROUP
    fi

    if [ -n "$LUKS_PASSWORD" ]; then
        DEVICE_ROOT="/dev/mapper/$LUKS_DEVICE_NAME"
    fi
    if [ "$LVM" == "true" ]; then
        DEVICE_ROOT="/dev/mapper/$LVM_VOLUME_GROUP-$LVM_VOLUME_LOGICAL"
    fi

    # format
    wipefs -a -f $PARTITION_BOOT || true
    wipefs -a -f $DEVICE_ROOT || true

    if [ "$BIOS_TYPE" == "uefi" ]; then
        mkfs.fat -n ESP -F32 $PARTITION_BOOT
    fi
    if [ "$BIOS_TYPE" == "bios" ]; then
        mkfs.ext4 -L boot $PARTITION_BOOT
    fi
    if [ "$FILE_SYSTEM_TYPE" == "f2fs" -o "$FILE_SYSTEM_TYPE" == "reiserfs" ]; then
        mkfs."$FILE_SYSTEM_TYPE" -l root $DEVICE_ROOT
    else
        mkfs."$FILE_SYSTEM_TYPE" -L root $DEVICE_ROOT
    fi

    # options
    PARTITION_OPTIONS_BOOT="defaults"
    PARTITION_OPTIONS_ROOT="defaults"

    if [ "$DEVICE_TRIM" == "true" ]; then
        PARTITION_OPTIONS_BOOT="$PARTITION_OPTIONS_BOOT,noatime"
        PARTITION_OPTIONS_ROOT="$PARTITION_OPTIONS_ROOT,noatime"
        if [ "$FILE_SYSTEM_TYPE" == "f2fs" ]; then
            PARTITION_OPTIONS_ROOT="$PARTITION_OPTIONS_ROOT,nodiscard"
        fi
    fi

    # mount
    if [ "$FILE_SYSTEM_TYPE" == "btrfs" ]; then
        mount -o "$PARTITION_OPTIONS" "$DEVICE_ROOT" /mnt
        btrfs subvolume create /mnt/root
        btrfs subvolume create /mnt/home
        btrfs subvolume create /mnt/var
        btrfs subvolume create /mnt/snapshots
        umount /mnt

        mount -o "subvol=root,$PARTITION_OPTIONS,compress=zstd" "$DEVICE_ROOT" /mnt

        mkdir /mnt/{boot,home,var,snapshots}
        mount -o "$PARTITION_OPTIONS_BOOT" "$PARTITION_BOOT" /mnt/boot
        mount -o "subvol=home,$PARTITION_OPTIONS_ROOT,compress=zstd" "$DEVICE_ROOT" /mnt/home
        mount -o "subvol=var,$PARTITION_OPTIONS_ROOT,compress=zstd" "$DEVICE_ROOT" /mnt/var
        mount -o "subvol=snapshots,$PARTITION_OPTIONS_ROOT,compress=zstd" "$DEVICE_ROOT" /mnt/snapshots
    else
        mount -o "$PARTITION_OPTIONS_ROOT" "$DEVICE_ROOT" /mnt

        mkdir /mnt/boot
        mount -o "$PARTITION_OPTIONS_BOOT" "$PARTITION_BOOT" /mnt/boot
    fi

    # swap
    if [ -n "$SWAP_SIZE" ]; then
        if [ "$FILE_SYSTEM_TYPE" == "btrfs" ]; then
            truncate -s 0 /mnt$SWAPFILE
            chattr +C /mnt$SWAPFILE
            btrfs property set /mnt$SWAPFILE compression none
        fi

        dd if=/dev/zero of=/mnt$SWAPFILE bs=1M count=$SWAP_SIZE status=progress
        chmod 600 /mnt$SWAPFILE
        mkswap /mnt$SWAPFILE
    fi

    # set variables
    BOOT_DIRECTORY=/boot
    ESP_DIRECTORY=/boot
    UUID_BOOT=$(blkid -s UUID -o value $PARTITION_BOOT)
    UUID_ROOT=$(blkid -s UUID -o value $PARTITION_ROOT)
    PARTUUID_BOOT=$(blkid -s PARTUUID -o value $PARTITION_BOOT)
    PARTUUID_ROOT=$(blkid -s PARTUUID -o value $PARTITION_ROOT)
}

function install() {
    print_step "install()"

    if [ -n "$PACMAN_MIRROR" ]; then
        echo "Server = $PACMAN_MIRROR" > /etc/pacman.d/mirrorlist
    fi
    if [ "$REFLECTOR" == "true" ]; then
        COUNTRIES=()
        for COUNTRY in "${REFLECTOR_COUNTRIES[@]}"; do
            COUNTRIES+=(--country "${COUNTRY}")
        done
        pacman -Sy --noconfirm reflector
        reflector "${COUNTRIES[@]}" --latest 25 --age 24 --protocol https --completion-percent 100 --sort rate --save /etc/pacman.d/mirrorlist
    fi

    sed -i 's/#Color/Color/' /etc/pacman.conf
    sed -i 's/#ParallelDownloads/ParallelDownloads/' /etc/pacman.conf

    pacstrap /mnt base base-devel linux linux-firmware

    sed -i 's/#Color/Color/' /mnt/etc/pacman.conf
    sed -i 's/#ParallelDownloads/ParallelDownloads/' /mnt/etc/pacman.conf

    if [ "$PACKAGES_MULTILIB" == "true" ]; then
        echo "" >> /mnt/etc/pacman.conf
        echo "[multilib]" >> /mnt/etc/pacman.conf
        echo "Include = /etc/pacman.d/mirrorlist" >> /mnt/etc/pacman.conf
        echo "" >> /mnt/etc/pacman.conf
    fi
}

function configuration() {
    print_step "configuration()"

    genfstab -U /mnt >> /mnt/etc/fstab

    if [ -n "$SWAP_SIZE" ]; then
        echo "# swap" >> /mnt/etc/fstab
        echo "$SWAPFILE none swap defaults 0 0" >> /mnt/etc/fstab
        echo "" >> /mnt/etc/fstab
    fi

    if [ "$DEVICE_TRIM" == "true" ]; then
        if [ "$FILE_SYSTEM_TYPE" == "f2fs" ]; then
            sed -i 's/relatime/noatime,nodiscard/' /mnt/etc/fstab
        else
            sed -i 's/relatime/noatime/' /mnt/etc/fstab
        fi
        arch-chroot /mnt systemctl enable fstrim.timer
    fi

    arch-chroot /mnt ln -s -f $TIMEZONE /etc/localtime
    arch-chroot /mnt hwclock --systohc
    for LOCALE in "${LOCALES[@]}"; do
        sed -i "s/#$LOCALE/$LOCALE/" /etc/locale.gen
        sed -i "s/#$LOCALE/$LOCALE/" /mnt/etc/locale.gen
    done
    for VARIABLE in "${LOCALE_CONF[@]}"; do
        #localectl set-locale "$VARIABLE"
        echo -e "$VARIABLE" >> /mnt/etc/locale.conf
    done
    locale-gen
    arch-chroot /mnt locale-gen
    echo -e "$KEYMAP\n$FONT\n$FONT_MAP" > /mnt/etc/vconsole.conf
    echo $HOSTNAME > /mnt/etc/hostname

    OPTIONS=""
    if [ -n "$KEYLAYOUT" ]; then
        OPTIONS="$OPTIONS"$'\n'"    Option \"XkbLayout\" \"$KEYLAYOUT\""
    fi
    if [ -n "$KEYMODEL" ]; then
        OPTIONS="$OPTIONS"$'\n'"    Option \"XkbModel\" \"$KEYMODEL\""
    fi
    if [ -n "$KEYVARIANT" ]; then
        OPTIONS="$OPTIONS"$'\n'"    Option \"XkbVariant\" \"$KEYVARIANT\""
    fi
    if [ -n "$KEYOPTIONS" ]; then
        OPTIONS="$OPTIONS"$'\n'"    Option \"XkbOptions\" \"$KEYOPTIONS\""
    fi

    arch-chroot /mnt mkdir -p "/etc/X11/xorg.conf.d/"
    cat <<EOT > /mnt/etc/X11/xorg.conf.d/00-keyboard.conf
# Written by systemd-localed(8), read by systemd-localed and Xorg. It's
# probably wise not to edit this file manually. Use localectl(1) to
# instruct systemd-localed to update it.
Section "InputClass"
    Identifier "system-keyboard"
    MatchIsKeyboard "on"
    $OPTIONS
EndSection
EOT

    if [ -n "$SWAP_SIZE" ]; then
        echo "vm.swappiness=10" > /mnt/etc/sysctl.d/99-sysctl.conf
    fi

    printf "$ROOT_PASSWORD\n$ROOT_PASSWORD" | arch-chroot /mnt passwd
}

function mkinitcpio_configuration() {
    print_step "mkinitcpio_configuration()"

    if [ "$KMS" == "true" ]; then
        MODULES=""
        case "$DISPLAY_DRIVER" in
            "intel" )
                MODULES="i915"
                ;;
            "nvidia" | "nvidia-lts"  | "nvidia-dkms" | "nvidia-390xx" | "nvidia-390xx-lts" | "nvidia-390xx-dkms" )
                MODULES="nvidia nvidia_modeset nvidia_uvm nvidia_drm"
                ;;
            "amdgpu" )
                MODULES="amdgpu"
                ;;
            "ati" )
                MODULES="radeon"
                ;;
            "nouveau" )
                MODULES="nouveau"
                ;;
        esac
        arch-chroot /mnt sed -i "s/^MODULES=()/MODULES=($MODULES)/" /etc/mkinitcpio.conf
    fi
    if [ "$DISPLAY_DRIVER" == "intel" ]; then
        OPTIONS=""
        if [ "$FASTBOOT" == "true" ]; then
            OPTIONS="$OPTIONS fastboot=1"
        fi
        if [ "$FRAMEBUFFER_COMPRESSION" == "true" ]; then
            OPTIONS="$OPTIONS enable_fbc=1"
        fi
        if [ -n "$OPTIONS"]; then
            echo "options i915 $OPTIONS" > /mnt/etc/modprobe.d/i915.conf
        fi
    fi

    if [ "$LVM" == "true" ]; then
        pacman_install "lvm2"
    fi
    if [ "$FILE_SYSTEM_TYPE" == "btrfs" ]; then
        pacman_install "btrfs-progs"
    fi
    if [ "$FILE_SYSTEM_TYPE" == "f2fs" ]; then
        pacman_install "f2fs-tools"
    fi
    if [ "$FILE_SYSTEM_TYPE" == "reiserfs" ]; then
        pacman_install "reiserfsprogs"
    fi

    if [ "$BOOTLOADER" == "systemd" ]; then
        HOOKS=$(echo $HOOKS | sed 's/!systemd/systemd/')
        HOOKS=$(echo $HOOKS | sed 's/!sd-vconsole/sd-vconsole/')
        if [ "$LVM" == "true" ]; then
            HOOKS=$(echo $HOOKS | sed 's/!sd-lvm2/sd-lvm2/')
        fi
        if [ -n "$LUKS_PASSWORD" ]; then
            HOOKS=$(echo $HOOKS | sed 's/!sd-encrypt/sd-encrypt/')
        fi
    else
        HOOKS=$(echo $HOOKS | sed 's/!udev/udev/')
        HOOKS=$(echo $HOOKS | sed 's/!usr/usr/')
        HOOKS=$(echo $HOOKS | sed 's/!keymap/keymap/')
        HOOKS=$(echo $HOOKS | sed 's/!consolefont/consolefont/')
        if [ "$LVM" == "true" ]; then
            HOOKS=$(echo $HOOKS | sed 's/!lvm2/lvm2/')
        fi
        if [ -n "$LUKS_PASSWORD" ]; then
            HOOKS=$(echo $HOOKS | sed 's/!encrypt/encrypt/')
        fi
    fi
    HOOKS=$(sanitize_variable "$HOOKS")
    arch-chroot /mnt sed -i "s/^HOOKS=(.*)$/HOOKS=($HOOKS)/" /etc/mkinitcpio.conf

    if [ "$KERNELS_COMPRESSION" != "" ]; then
        arch-chroot /mnt sed -i 's/^#COMPRESSION="'"$KERNELS_COMPRESSION"'"/COMPRESSION="'"$KERNELS_COMPRESSION"'"/' /etc/mkinitcpio.conf
    fi

    if [ "$KERNELS_COMPRESSION" == "bzip2" ]; then
        pacman_install "bzip2"
    fi
    if [ "$KERNELS_COMPRESSION" == "lzma" -o "$KERNELS_COMPRESSION" == "xz" ]; then
        pacman_install "xz"
    fi
    if [ "$KERNELS_COMPRESSION" == "lzop" ]; then
        pacman_install "lzop"
    fi
    if [ "$KERNELS_COMPRESSION" == "lz4" ]; then
        pacman_install "lz4"
    fi
    if [ "$KERNELS_COMPRESSION" == "zstd" ]; then
        pacman_install "zstd"
    fi
}

function display_driver() {
    print_step "display_driver()"

    PACKAGES_DRIVER=""
    PACKAGES_DRIVER_MULTILIB=""
    PACKAGES_DDX=""
    PACKAGES_VULKAN=""
    PACKAGES_VULKAN_MULTILIB=""
    PACKAGES_HARDWARE_ACCELERATION=""
    PACKAGES_HARDWARE_ACCELERATION_MULTILIB=""
    case "$DISPLAY_DRIVER" in
        "intel" )
            PACKAGES_DRIVER_MULTILIB="lib32-mesa"
            ;;
        "amdgpu" )
            PACKAGES_DRIVER_MULTILIB="lib32-mesa"
            ;;
        "ati" )
            PACKAGES_DRIVER_MULTILIB="lib32-mesa"
            ;;
        "nvidia" )
            PACKAGES_DRIVER="nvidia"
            PACKAGES_DRIVER_MULTILIB="lib32-nvidia-utils"
            ;;
        "nvidia-lts" )
            PACKAGES_DRIVER="nvidia-lts"
            PACKAGES_DRIVER_MULTILIB="lib32-nvidia-utils"
            ;;
        "nvidia-dkms" )
            PACKAGES_DRIVER="nvidia-dkms"
            PACKAGES_DRIVER_MULTILIB="lib32-nvidia-utils"
            ;;
        "nvidia-390xx" )
            PACKAGES_DRIVER="nvidia-390xx"
            PACKAGES_DRIVER_MULTILIB=""
            ;;
        "nvidia-390xx-lts" )
            PACKAGES_DRIVER="nvidia-390xx-lts"
            PACKAGES_DRIVER_MULTILIB=""
            ;;
        "nvidia-390xx-dkms" )
            PACKAGES_DRIVER="nvidia-390xx-dkms"
            PACKAGES_DRIVER_MULTILIB=""
            ;;
        "nouveau" )
            PACKAGES_DRIVER_MULTILIB="lib32-mesa"
            ;;
    esac
    if [ "$DISPLAY_DRIVER_DDX" == "true" ]; then
        case "$DISPLAY_DRIVER" in
            "intel" )
                PACKAGES_DDX="xf86-video-intel"
                ;;
            "amdgpu" )
                PACKAGES_DDX="xf86-video-amdgpu"
                ;;
            "ati" )
                PACKAGES_DDX="xf86-video-ati"
                ;;
            "nouveau" )
                PACKAGES_DDX="xf86-video-nouveau"
                ;;
        esac
    fi
    if [ "$VULKAN" == "true" ]; then
        case "$DISPLAY_DRIVER" in
            "intel" )
                PACKAGES_VULKAN="vulkan-icd-loader vulkan-intel"
                PACKAGES_VULKAN_MULTILIB="lib32-vulkan-icd-loader lib32-vulkan-intel"
                ;;
            "amdgpu" )
                PACKAGES_VULKAN="vulkan-radeon"
                PACKAGES_VULKAN_MULTILIB="lib32-vulkan-radeon"
                ;;
            "ati" )
                PACKAGES_VULKAN="vulkan-radeon"
                PACKAGES_VULKAN_MULTILIB="lib32-vulkan-radeon"
                ;;
            "nvidia" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB="lib32-nvidia-utils"
                ;;
            "nvidia-lts" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB="lib32-nvidia-utils"
                ;;
            "nvidia-dkms" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB="lib32-nvidia-utils"
                ;;
            "nvidia-390xx" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB=""
                ;;
            "nvidia-390xx-lts" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB=""
                ;;
            "nvidia-390xx-dkms" )
                PACKAGES_VULKAN="nvidia-utils"
                PACKAGES_VULKAN_MULTILIB=""
                ;;
            "nouveau" )
                PACKAGES_VULKAN=""
                PACKAGES_VULKAN_MULTILIB=""
                ;;
        esac
    fi
    if [ "$DISPLAY_DRIVER_HARDWARE_ACCELERATION" == "true" ]; then
        case "$DISPLAY_DRIVER" in
            "intel" )
                if [ -n "$DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL" ]; then
                    PACKAGES_HARDWARE_ACCELERATION=$DISPLAY_DRIVER_HARDWARE_ACCELERATION_INTEL
                    PACKAGES_HARDWARE_ACCELERATION_MULTILIB=""
                fi
                ;;
            "amdgpu" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "ati" )
                PACKAGES_HARDWARE_ACCELERATION="mesa-vdpau"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-mesa-vdpau"
                ;;
            "nvidia" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nvidia-lts" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nvidia-dkms" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nvidia-390xx" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nvidia-390xx-lts" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nvidia-390xx-dkms" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
            "nouveau" )
                PACKAGES_HARDWARE_ACCELERATION="libva-mesa-driver"
                PACKAGES_HARDWARE_ACCELERATION_MULTILIB="lib32-libva-mesa-driver"
                ;;
        esac
    fi

    pacman_install "mesa $PACKAGES_DRIVER $PACKAGES_DDX $PACKAGES_VULKAN $PACKAGES_HARDWARE_ACCELERATION"

    if [ "$PACKAGES_MULTILIB" == "true" ]; then
        pacman_install "$PACKAGES_DRIVER_MULTILIB $PACKAGES_VULKAN_MULTILIB $PACKAGES_HARDWARE_ACCELERATION_MULTILIB"
    fi
}

function kernels() {
    print_step "kernels()"

    pacman_install "linux-headers"
    if [ -n "$KERNELS" ]; then
        pacman_install "$KERNELS"
    fi
}

function mkinitcpio() {
    print_step "mkinitcpio()"

    arch-chroot /mnt mkinitcpio -P
}

function network() {
    print_step "network()"

    pacman_install "networkmanager"
    arch-chroot /mnt systemctl enable NetworkManager.service
}

function virtualbox() {
    print_step "virtualbox()"

    if [ -z "$KERNELS" ]; then
        pacman_install "virtualbox-guest-utils"
    else
        pacman_install "virtualbox-guest-utils virtualbox-guest-dkms"
    fi
}

function users() {
    print_step "users()"

    create_user "$USER_NAME" "$USER_PASSWORD"

    for U in ${ADDITIONAL_USERS[@]}; do
        IFS='=' S=(${U})
        USER=${S[0]}
        PASSWORD=${S[1]}
        create_user "${USER}" "${PASSWORD}"
    done

	arch-chroot /mnt sed -i 's/# %wheel ALL=(ALL) ALL/%wheel ALL=(ALL) ALL/' /etc/sudoers

    pacman_install "xdg-user-dirs"

    if [ "$SYSTEMD_HOMED" == "true" ]; then
        cat <<EOT > "/mnt/etc/pam.d/nss-auth"
#%PAM-1.0

auth     sufficient pam_unix.so try_first_pass nullok
auth     sufficient pam_systemd_home.so
auth     required   pam_deny.so

account  sufficient pam_unix.so
account  sufficient pam_systemd_home.so
account  required   pam_deny.so

password sufficient pam_unix.so try_first_pass nullok sha512 shadow
password sufficient pam_systemd_home.so
password required   pam_deny.so
EOT

        cat <<EOT > "/mnt/etc/pam.d/system-auth"
#%PAM-1.0

auth      substack   nss-auth
auth      optional   pam_permit.so
auth      required   pam_env.so

account   substack   nss-auth
account   optional   pam_permit.so
account   required   pam_time.so

password  substack   nss-auth
password  optional   pam_permit.so

session   required  pam_limits.so
session   optional  pam_systemd_home.so
session   required  pam_unix.so
session   optional  pam_permit.so
EOT
    fi
}

function create_user() {
    USER=$1
    PASSWORD=$2
    if [ "$SYSTEMD_HOMED" == "true" ]; then
        arch-chroot /mnt systemctl enable systemd-homed.service
        create_user_homectl $USER $PASSWORD
#       create_user_useradd $USER $PASSWORD
    else
        create_user_useradd $USER $PASSWORD
    fi
}

function create_user_homectl() {
    USER=$1
    PASSWORD=$2
    STORAGE=""
    CIFS_DOMAIN=""
    CIFS_USERNAME=""
    CIFS_SERVICE=""
    TZ=$(echo ${TIMEZONE} | sed "s/\/usr\/share\/zoneinfo\///g")
    L=$(echo ${LOCALE_CONF[0]} | sed "s/LANG=//g")
    IMAGE_PATH="/home/$USER.homedir"
    HOME_PATH="/home/$USER"

    if [ -n "$SYSTEMD_HOMED_STORAGE" ]; then
        STORAGE="--storage=$SYSTEMD_HOMED_STORAGE"
    fi
    if [ "$SYSTEMD_HOMED_STORAGE" == "cifs" ]; then
        CIFS_DOMAIN="--cifs-domain=$SYSTEMD_HOMED_CIFS_DOMAIN"
        CIFS_USERNAME="--cifs-user-name=$USER"
        CIFS_SERVICE="--cifs-service=$SYSTEMD_HOMED_CIFS_SERVICE"
    fi
    if [ "$SYSTEMD_HOMED_STORAGE" == "luks" ]; then
        IMAGE_PATH="/home/$USER.home"
    fi

    ### something missing, inside alis this not works, after install the user is in state infixated
    ### after install and reboot this commands work
    systemctl start systemd-homed.service
    set +e
    homectl create "$USER" --enforce-password-policy=no --timezone=$TZ --language=$L $STORAGE $CIFS_DOMAIN $CIFS_USERNAME $CIFS_SERVICE -G wheel,storage,optical
    homectl activate "$USER"
    set -e
    cp -a "$IMAGE_PATH/." "/mnt$IMAGE_PATH"
    cp -a "$HOME_PATH/." "/mnt$HOME_PATH"
    cp -a "/var/lib/systemd/home/." "/mnt/var/lib/systemd/home/"
}

function create_user_useradd() {
    USER=$1
    PASSWORD=$2
    arch-chroot /mnt useradd -m -G wheel,storage,optical -s /bin/bash $USER
    printf "$PASSWORD\n$PASSWORD" | arch-chroot /mnt passwd $USER
}

function bootloader() {
    print_step "bootloader()"

    BOOTLOADER_ALLOW_DISCARDS=""

    if [ "$VIRTUALBOX" != "true" ]; then
        if [ "$CPU_VENDOR" == "intel" ]; then
            pacman_install "intel-ucode"
        fi
        if [ "$CPU_VENDOR" == "amd" ]; then
            pacman_install "amd-ucode"
        fi
    fi
    if [ "$LVM" == "true" ]; then
        CMDLINE_LINUX_ROOT="root=$DEVICE_ROOT"
    else
        CMDLINE_LINUX_ROOT="root=PARTUUID=$PARTUUID_ROOT"
    fi
    if [ -n "$LUKS_PASSWORD" ]; then
        if [ "$DEVICE_TRIM" == "true" ]; then
            BOOTLOADER_ALLOW_DISCARDS=":allow-discards"
        fi
        CMDLINE_LINUX="cryptdevice=PARTUUID=$PARTUUID_ROOT:$LUKS_DEVICE_NAME$BOOTLOADER_ALLOW_DISCARDS"
    fi
    if [ "$FILE_SYSTEM_TYPE" == "btrfs" ]; then
        CMDLINE_LINUX="$CMDLINE_LINUX rootflags=subvol=root"
    fi
    if [ "$KMS" == "true" ]; then
        case "$DISPLAY_DRIVER" in
            "nvidia" | "nvidia-390xx" | "nvidia-390xx-lts" )
                CMDLINE_LINUX="$CMDLINE_LINUX nvidia-drm.modeset=1"
                ;;
        esac
    fi

    if [ -n "$KERNELS_PARAMETERS" ]; then
        CMDLINE_LINUX="$CMDLINE_LINUX $KERNELS_PARAMETERS"
    fi

    case "$BOOTLOADER" in
        "grub" )
            bootloader_grub
            ;;
        "refind" )
            bootloader_refind
            ;;
        "systemd" )
            bootloader_systemd
            ;;
    esac

    arch-chroot /mnt systemctl set-default multi-user.target
}

function bootloader_grub() {
    pacman_install "grub dosfstools"
    arch-chroot /mnt sed -i 's/GRUB_DEFAULT=0/GRUB_DEFAULT=saved/' /etc/default/grub
    arch-chroot /mnt sed -i 's/#GRUB_SAVEDEFAULT="true"/GRUB_SAVEDEFAULT="true"/' /etc/default/grub
    arch-chroot /mnt sed -i -E 's/GRUB_CMDLINE_LINUX_DEFAULT="(.*) quiet"/GRUB_CMDLINE_LINUX_DEFAULT="\1"/' /etc/default/grub
    arch-chroot /mnt sed -i 's/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="'"$CMDLINE_LINUX"'"/' /etc/default/grub
    echo "" >> /mnt/etc/default/grub
    echo "# alis" >> /mnt/etc/default/grub
    echo "GRUB_DISABLE_SUBMENU=y" >> /mnt/etc/default/grub

    if [ "$BIOS_TYPE" == "uefi" ]; then
        pacman_install "efibootmgr"
        arch-chroot /mnt grub-install --target=x86_64-efi --bootloader-id=grub --efi-directory=$ESP_DIRECTORY --recheck
        #arch-chroot /mnt efibootmgr --create --disk $DEVICE --part $PARTITION_BOOT_NUMBER --loader /EFI/grub/grubx64.efi --label "GRUB Boot Manager"
    fi
    if [ "$BIOS_TYPE" == "bios" ]; then
        arch-chroot /mnt grub-install --target=i386-pc --recheck $DEVICE
    fi

    arch-chroot /mnt grub-mkconfig -o "$BOOT_DIRECTORY/grub/grub.cfg"

    if [ "$VIRTUALBOX" == "true" ]; then
        echo -n "\EFI\grub\grubx64.efi" > "/mnt$ESP_DIRECTORY/startup.nsh"
    fi
}

function bootloader_refind() {
    pacman_install "refind"
    arch-chroot /mnt refind-install

    arch-chroot /mnt rm /boot/refind_linux.conf
    arch-chroot /mnt sed -i 's/^timeout.*/timeout 5/' "$ESP_DIRECTORY/EFI/refind/refind.conf"
    arch-chroot /mnt sed -i 's/^#scan_all_linux_kernels.*/scan_all_linux_kernels false/' "$ESP_DIRECTORY/EFI/refind/refind.conf"
    #arch-chroot /mnt sed -i 's/^#default_selection "+,bzImage,vmlinuz"/default_selection "+,bzImage,vmlinuz"/' "$ESP_DIRECTORY/EFI/refind/refind.conf"

    REFIND_MICROCODE=""

    if [ "$VIRTUALBOX" != "true" ]; then
        if [ "$CPU_VENDOR" == "intel" ]; then
            REFIND_MICROCODE="initrd=/intel-ucode.img"
        fi
        if [ "$CPU_VENDOR" == "amd" ]; then
            REFIND_MICROCODE="initrd=/amd-ucode.img"
        fi
    fi

    cat <<EOT >> "/mnt$ESP_DIRECTORY/EFI/refind/refind.conf"
# alis
menuentry "Arch Linux" {
    volume   $PARTUUID_BOOT
    loader   /vmlinuz-linux
    initrd   /initramfs-linux.img
    icon     /EFI/refind/icons/os_arch.png
    options  "$REFIND_MICROCODE $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX"
    submenuentry "Boot using fallback initramfs"
	      initrd /initramfs-linux-fallback.img"
    }
    submenuentry "Boot to terminal"
	      add_options "systemd.unit=multi-user.target"
    }
}

EOT
    if [[ $KERNELS =~ .*linux-lts.* ]]; then
        cat <<EOT >> "/mnt$ESP_DIRECTORY/EFI/refind/refind.conf"
menuentry "Arch Linux (lts)" {
    volume   $PARTUUID_BOOT
    loader   /vmlinuz-linux-lts
    initrd   /initramfs-linux-lts.img
    icon     /EFI/refind/icons/os_arch.png
    options  "$REFIND_MICROCODE $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX"
    submenuentry "Boot using fallback initramfs" {
	      initrd /initramfs-linux-lts-fallback.img
    }
    submenuentry "Boot to terminal" {
	      add_options "systemd.unit=multi-user.target"
    }
}

EOT
    fi
    if [[ $KERNELS =~ .*linux-hardened.* ]]; then
        cat <<EOT >> "/mnt$ESP_DIRECTORY/EFI/refind/refind.conf"
menuentry "Arch Linux (hardened)" {
    volume   $PARTUUID_BOOT
    loader   /vmlinuz-linux-hardened
    initrd   /initramfs-linux-hardened.img
    icon     /EFI/refind/icons/os_arch.png
    options  "$REFIND_MICROCODE $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX"
    submenuentry "Boot using fallback initramfs" {
	      initrd /initramfs-linux-lts-fallback.img
    }
    submenuentry "Boot to terminal" {
	      add_options "systemd.unit=multi-user.target"
    }
}

EOT
    fi
    if [[ $KERNELS =~ .*linux-zen.* ]]; then
        cat <<EOT >> "/mnt$ESP_DIRECTORY/EFI/refind/refind.conf"
menuentry "Arch Linux (zen)" {
    volume   $PARTUUID_BOOT
    loader   /vmlinuz-linux-zen
    initrd   /initramfs-linux-zen.img
    icon     /EFI/refind/icons/os_arch.png
    options  "$REFIND_MICROCODE $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX"
    submenuentry "Boot using fallback initramfs" {
	      initrd /initramfs-linux-lts-fallback.img
    }
    submenuentry "Boot to terminal" {
	      add_options "systemd.unit=multi-user.target"
    }
}

EOT
    fi

    if [ "$VIRTUALBOX" == "true" ]; then
        echo -n "\EFI\refind\refind_x64.efi" > "/mnt$ESP_DIRECTORY/startup.nsh"
    fi
}

function bootloader_systemd() {
    arch-chroot /mnt systemd-machine-id-setup
    arch-chroot /mnt bootctl --path="$ESP_DIRECTORY" install

    arch-chroot /mnt mkdir -p "$ESP_DIRECTORY/loader/"
    arch-chroot /mnt mkdir -p "$ESP_DIRECTORY/loader/entries/"

    cat <<EOT > "/mnt$ESP_DIRECTORY/loader/loader.conf"
# alis
timeout 5
default archlinux
editor 0
EOT

    arch-chroot /mnt mkdir -p "/etc/pacman.d/hooks/"

    cat <<EOT > "/mnt/etc/pacman.d/hooks/systemd-boot.hook"
[Trigger]
Type = Package
Operation = Upgrade
Target = systemd

[Action]
Description = Updating systemd-boot
When = PostTransaction
Exec = /usr/bin/bootctl update
EOT

    SYSTEMD_MICROCODE=""
    SYSTEMD_OPTIONS=""

    if [ "$VIRTUALBOX" != "true" ]; then
        if [ "$CPU_VENDOR" == "intel" ]; then
            SYSTEMD_MICROCODE="/intel-ucode.img"
        fi
        if [ "$CPU_VENDOR" == "amd" ]; then
            SYSTEMD_MICROCODE="/amd-ucode.img"
        fi
    fi

    if [ -n "$LUKS_PASSWORD" ]; then
       SYSTEMD_OPTIONS="luks.name=$UUID_ROOT=$LUKS_DEVICE_NAME luks.options=discard"
    fi

    echo "title Arch Linux" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux.conf"
    echo "efi /vmlinuz-linux" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux.conf"
    if [ -n "$SYSTEMD_MICROCODE" ]; then
        echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux.conf"
    fi
    echo "initrd /initramfs-linux.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux.conf"
    echo "options initrd=initramfs-linux.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux.conf"

    echo "title Arch Linux (terminal)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-terminal.conf"
    echo "efi /vmlinuz-linux" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-terminal.conf"
    if [ -n "$SYSTEMD_MICROCODE" ]; then
        echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-terminal.conf"
    fi
    echo "initrd /initramfs-linux.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-terminal.conf"
    echo "options initrd=initramfs-linux.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX systemd.unit=multi-user.target $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-terminal.conf"

    echo "title Arch Linux (fallback)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-fallback.conf"
    echo "efi /vmlinuz-linux" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-fallback.conf"
    if [ -n "$SYSTEMD_MICROCODE" ]; then
        echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-fallback.conf"
    fi
    echo "initrd /initramfs-linux-fallback.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-fallback.conf"
    echo "options initrd=initramfs-linux-fallback.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-fallback.conf"

    if [[ $KERNELS =~ .*linux-lts.* ]]; then
        echo "title Arch Linux (lts)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts.conf"
        echo "efi /vmlinuz-linux-lts" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts.conf"
        fi
        echo "initrd /initramfs-linux-lts.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts.conf"
        echo "options initrd=initramfs-linux-lts.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts.conf"

        echo "title Arch Linux (lts, terminal)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-terminal.conf"
        echo "efi /vmlinuz-linux-lts" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-terminal.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-terminal.conf"
        fi
        echo "initrd /initramfs-linux-lts.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-terminal.conf"
        echo "options initrd=initramfs-linux-lts.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX systemd.unit=multi-user.target $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-terminal.conf"

        echo "title Arch Linux (lts-fallback)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-fallback.conf"
        echo "efi /vmlinuz-linux-lts" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-fallback.conf"
        if [ "$CPU_INTEL" == "true" -a "$VIRTUALBOX" != "true" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-fallback.conf"
        fi
        echo "initrd /initramfs-linux-lts-fallback.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-fallback.conf"
        echo "options initrd=initramfs-linux-lts-fallback.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-lts-fallback.conf"
    fi

    if [[ $KERNELS =~ .*linux-hardened.* ]]; then
        echo "title Arch Linux (hardened)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened.conf"
        echo "efi /vmlinuz-linux-hardened" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened.conf"
        fi
        echo "initrd /initramfs-linux-hardened.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened.conf"
        echo "options initrd=initramfs-linux-hardened.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened.conf"

        echo "title Arch Linux (hardened, terminal)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-terminal.conf"
        echo "efi /vmlinuz-linux-hardened" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-terminal.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-terminal.conf"
        fi
        echo "initrd /initramfs-linux-hardened.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-terminal.conf"
        echo "options initrd=initramfs-linux-hardened.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX systemd.unit=multi-user.target $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-terminal.conf"

        echo "title Arch Linux (hardened-fallback)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-fallback.conf"
        echo "efi /vmlinuz-linux-hardened" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-fallback.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-fallback.conf"
        fi
        echo "initrd /initramfs-linux-hardened-fallback.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-fallback.conf"
        echo "options initrd=initramfs-linux-hardened-fallback.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-hardened-fallback.conf"
    fi

    if [[ $KERNELS =~ .*linux-zen.* ]]; then
        echo "title Arch Linux (zen)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen.conf"
        echo "efi /vmlinuz-linux-zen" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen.conf"
        fi
        echo "initrd /initramfs-linux-zen.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen.conf"
        echo "options initrd=initramfs-linux-zen.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen.conf"

        echo "title Arch Linux (zen, terminal)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-terminal.conf"
        echo "efi /vmlinuz-linux-zen" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-terminal.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-terminal.conf"
        fi
        echo "initrd /initramfs-linux-zen.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-terminal.conf"
        echo "options initrd=initramfs-linux-zen.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX systemd.unit=multi-user.target $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-terminal.conf"

        echo "title Arch Linux (zen-fallback)" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-fallback.conf"
        echo "efi /vmlinuz-linux-zen" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-fallback.conf"
        if [ -n "$SYSTEMD_MICROCODE" ]; then
            echo "initrd $SYSTEMD_MICROCODE" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-fallback.conf"
        fi
        echo "initrd /initramfs-linux-zen-fallback.img" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-fallback.conf"
        echo "options initrd=initramfs-linux-zen-fallback.img $CMDLINE_LINUX_ROOT rw $CMDLINE_LINUX $SYSTEMD_OPTIONS" >> "/mnt$ESP_DIRECTORY/loader/entries/archlinux-zen-fallback.conf"
    fi

    if [ "$VIRTUALBOX" == "true" ]; then
        echo -n "\EFI\systemd\systemd-bootx64.efi" > "/mnt$ESP_DIRECTORY/startup.nsh"
    fi
}

function custom_shell() {
    print_step "custom_shell()"

    CUSTOM_SHELL_PATH=""
    case "$CUSTOM_SHELL" in
        "zsh" )
            pacman_install "zsh"
            CUSTOM_SHELL_PATH="/usr/bin/zsh"
            ;;
        "dash" )
            pacman_install "dash"
            CUSTOM_SHELL_PATH="/usr/bin/dash"
            ;;
        "fish" )
            pacman_install "fish"
            CUSTOM_SHELL_PATH="/usr/bin/fish"
            ;;
    esac

    if [ -n "$CUSTOM_SHELL_PATH" ]; then
        custom_shell_user "root" $CUSTOM_SHELL_PATH
        custom_shell_user "$USER_NAME" $CUSTOM_SHELL_PATH
        for U in ${ADDITIONAL_USERS[@]}; do
            IFS='=' S=(${U})
            USER=${S[0]}
            custom_shell_user "$USER" $CUSTOM_SHELL_PATH
        done
    fi
}


function custom_shell_user() {
    USER=$1
    CUSTOM_SHELL_PATH=$2

    if [ "$SYSTEMD_HOMED" == "true" ]; then
        homectl update --shell=$CUSTOM_SHELL_PATH $USER
    else
        arch-chroot /mnt chsh -s $CUSTOM_SHELL_PATH $USER
    fi
}

function desktop_environment() {
    print_step "desktop_environment()"

    case "$DESKTOP_ENVIRONMENT" in
        "gnome" )
            desktop_environment_gnome
            ;;
        "kde" )
            desktop_environment_kde
            ;;
        "xfce" )
            desktop_environment_xfce
            ;;
        "mate" )
            desktop_environment_mate
            ;;
        "cinnamon" )
            desktop_environment_cinnamon
            ;;
        "lxde" )
            desktop_environment_lxde
            ;;
        "i3-wm" )
            desktop_environment_i3_wm
            ;;
        "i3-gaps" )
            desktop_environment_i3_gaps
            ;;
    esac

    arch-chroot /mnt systemctl set-default graphical.target
}

function desktop_environment_gnome() {
    pacman_install "gnome"
    arch-chroot /mnt systemctl enable gdm.service
}

function desktop_environment_kde() {
    pacman_install "plasma-meta plasma-wayland-session kde-applications-meta"
    arch-chroot /mnt systemctl enable sddm.service
}

function desktop_environment_xfce() {
    pacman_install "xfce4 xfce4-goodies lightdm lightdm-gtk-greeter xorg-server"
    arch-chroot /mnt systemctl enable lightdm.service
}

function desktop_environment_mate() {
    pacman_install "mate mate-extra lightdm lightdm-gtk-greeter xorg-server"
    arch-chroot /mnt systemctl enable lightdm.service
}

function desktop_environment_cinnamon() {
    pacman_install "cinnamon lightdm lightdm-gtk-greeter xorg-server"
    arch-chroot /mnt systemctl enable lightdm.service
}

function desktop_environment_lxde() {
    pacman_install "lxde lxdm"
    arch-chroot /mnt systemctl enable lxdm.service
}

function desktop_environment_i3_wm() {
    pacman_install "i3-wm i3blocks i3lock i3status dmenu rxvt-unicode lightdm lightdm-gtk-greeter xorg-server"
    arch-chroot /mnt systemctl enable lightdm.service
}

function desktop_environment_i3_gaps() {
    pacman_install "i3-gaps i3blocks i3lock i3status dmenu rxvt-unicode lightdm lightdm-gtk-greeter xorg-server"
    arch-chroot /mnt systemctl enable lightdm.service
}

function packages() {
    if [ "$PACKAGES_INSTALL" == "true" ]; then
        (USER_NAME=$USER_NAME \
         USER_PASSWORD=$USER_PASSWORD \
            ./alis-packages.sh)
    fi
}

function vagrant() {
    pacman_install "openssh"
    create_user "vagrant" "vagrant"
    arch-chroot /mnt systemctl enable sshd.service
    arch-chroot /mnt ssh-keygen -A
    arch-chroot /mnt sshd -t
}

function systemd_units() {
    IFS=' ' UNITS=($SYSTEMD_UNITS)
    for U in ${UNITS[@]}; do
        ACTION=""
        UNIT=${U}
        if [[ $UNIT == -* ]]; then
            ACTION="disable"
            UNIT=$(echo $UNIT | sed "s/^-//g")
        elif [[ $UNIT == +* ]]; then
            ACTION="enable"
            UNIT=$(echo $UNIT | sed "s/^+//g")
        elif [[ $UNIT =~ ^[a-zA-Z0-9]+ ]]; then
            ACTION="enable"
            UNIT=$UNIT
        fi

        if [ -n "$ACTION" ]; then
            arch-chroot /mnt systemctl $ACTION $UNIT
        fi
    done
}

function end() {
    echo ""
    echo -e "${GREEN}Arch Linux installed successfully"'!'"${NC}"
    echo ""

    if [ "$REBOOT" == "true" ]; then
        REBOOT="true"

        set +e
        for (( i = 15; i >= 1; i-- )); do
            read -r -s -n 1 -t 1 -p "Rebooting in $i seconds... Press any key to abort."$'\n' KEY
            if [ $? -eq 0 ]; then
                REBOOT="false"
                break
            fi
        done
        set -e

        if [ "$REBOOT" == 'true' ]; then
            echo "Rebooting..."
            echo ""

            copy_logs
            do_reboot
        else
            if [ "$ASCIINEMA" == "true" ]; then
                echo "Reboot aborted. You will must terminate asciinema recording and do a explicit reboot (exit, ./alis-reboot.sh)."
                echo ""
            else
                echo "Reboot aborted. You will must do a explicit reboot (./alis-reboot.sh)."
                echo ""
            fi
        fi
    else
        if [ "$ASCIINEMA" == "true" ]; then
            echo "No reboot. You will must terminate asciinema recording and do a explicit reboot (exit, ./alis-reboot.sh)."
            echo ""
        else
            echo "No reboot. You will must do a explicit reboot (./alis-reboot.sh)."
            echo ""
        fi
    fi
}

function pacman_install() {
    ERROR="true"
    set +e
    IFS=' ' PACKAGES=($1)
    for VARIABLE in {1..5}
    do
        arch-chroot /mnt pacman -Syu --noconfirm --needed ${PACKAGES[@]}
        if [ $? == 0 ]; then
            ERROR="false"
            break
        else
            sleep 10
        fi
    done
    set -e
    if [ "$ERROR" == "true" ]; then
        exit
    fi
}

function copy_logs() {
    ESCAPED_LUKS_PASSWORD=$(echo "${LUKS_PASSWORD}" | sed 's/[.[\*^$()+?{|]/[\\&]/g')
    ESCAPED_ROOT_PASSWORD=$(echo "${ROOT_PASSWORD}" | sed 's/[.[\*^$()+?{|]/[\\&]/g')
    ESCAPED_USER_PASSWORD=$(echo "${USER_PASSWORD}" | sed 's/[.[\*^$()+?{|]/[\\&]/g')

    if [ -f "$CONF_FILE" ]; then
        SOURCE_FILE="$CONF_FILE"
        FILE="/mnt/var/log/alis/$CONF_FILE"

        mkdir -p /mnt/var/log/alis
        cp "$SOURCE_FILE" "$FILE"
        chown root:root "$FILE"
        chmod 600 "$FILE"
        if [ -n "$ESCAPED_LUKS_PASSWORD" ]; then
            sed -i "s/${ESCAPED_LUKS_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_ROOT_PASSWORD" ]; then
            sed -i "s/${ESCAPED_ROOT_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_USER_PASSWORD" ]; then
            sed -i "s/${ESCAPED_USER_PASSWORD}/******/g" "$FILE"
        fi
    fi
    if [ -f "$LOG_FILE" ]; then
        SOURCE_FILE="$LOG_FILE"
        FILE="/mnt/var/log/alis/$LOG_FILE"

        mkdir -p /mnt/var/log/alis
        cp "$SOURCE_FILE" "$FILE"
        chown root:root "$FILE"
        chmod 600 "$FILE"
        if [ -n "$ESCAPED_LUKS_PASSWORD" ]; then
            sed -i "s/${ESCAPED_LUKS_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_ROOT_PASSWORD" ]; then
            sed -i "s/${ESCAPED_ROOT_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_USER_PASWORD" ]; then
            sed -i "s/${ESCAPED_USER_PASSWORD}/******/g" "$FILE"
        fi
    fi
    if [ -f "$ASCIINEMA_FILE" ]; then
        SOURCE_FILE="$ASCIINEMA_FILE"
        FILE="/mnt/var/log/alis/$ASCIINEMA_FILE"

        mkdir -p /mnt/var/log/alis
        cp "$SOURCE_FILE" "$FILE"
        chown root:root "$FILE"
        chmod 600 "$FILE"
        if [ -n "$ESCAPED_LUKS_PASSWORD" ]; then
            sed -i "s/${ESCAPED_LUKS_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_ROOT_PASSWORD" ]; then
            sed -i "s/${ESCAPED_ROOT_PASSWORD}/******/g" "$FILE"
        fi
        if [ -n "$ESCAPED_USER_PASSWORD" ]; then
            sed -i "s/${ESCAPED_USER_PASSWORD}/******/g" "$FILE"
        fi
    fi
}

function do_reboot() {
    umount -R /mnt/boot
    umount -R /mnt
    reboot
}

function print_step() {
    STEP="$1"
    echo ""
    echo -e "${LIGHT_BLUE}# ${STEP} step${NC}"
    echo ""
}

function execute_step() {
    STEP="$1"
    STEPS="$2"
    if [[ " $STEPS " =~ " $STEP " ]]; then
        eval $STEP
        save_globals
    else
        echo "Skipping $STEP"
    fi
}

function load_globals() {
    if [ -f "$GLOBALS_FILE" ]; then
        source "$GLOBALS_FILE"
    fi
}

function save_globals() {
    cat <<EOT > $GLOBALS_FILE
ASCIINEMA="$ASCIINEMA"
BIOS_TYPE="$BIOS_TYPE"
PARTITION_BOOT="$PARTITION_BOOT"
PARTITION_ROOT="$PARTITION_ROOT"
PARTITION_BOOT_NUMBER="$PARTITION_BOOT_NUMBER"
PARTITION_ROOT_NUMBER="$PARTITION_ROOT_NUMBER"
DEVICE_ROOT="$DEVICE_ROOT"
DEVICE_LVM="$DEVICE_LVM"
LUKS_DEVICE_NAME="$LUKS_DEVICE_NAME"
LVM_VOLUME_GROUP="$LVM_VOLUME_GROUP"
LVM_VOLUME_LOGICAL="$LVM_VOLUME_LOGICAL"
SWAPFILE="$SWAPFILE"
BOOT_DIRECTORY="$BOOT_DIRECTORY"
ESP_DIRECTORY="$ESP_DIRECTORY"
UUID_BOOT="$UUID_BOOT"
UUID_ROOT="$UUID_ROOT"
PARTUUID_BOOT="$PARTUUID_BOOT"
PARTUUID_ROOT="$PARTUUID_ROOT"
DEVICE_SATA="$DEVICE_SATA"
DEVICE_NVME="$DEVICE_NVME"
DEVICE_MMC="$DEVICE_MMC"
CPU_VENDOR="$CPU_VENDOR"
VIRTUALBOX="$VIRTUALBOX"
CMDLINE_LINUX_ROOT="$CMDLINE_LINUX_ROOT"
CMDLINE_LINUX="$CMDLINE_LINUX"
EOT
}

function main() {
    ALL_STEPS=("configuration_install" "sanitize_variables" "check_variables" "warning" "init" "facts" "checks" "prepare" "partition" "install" "configuration" "mkinitcpio_configuration" "display_driver" "kernels" "mkinitcpio" "network" "virtualbox" "users" "bootloader" "custom_shell" "desktop_environment" "packages" "vagrant" "systemd_units" "end")
    STEP="configuration_install"

    if [ -n "$1" ]; then
        STEP="$1"
    fi
    if [ "$STEP" == "steps" ]; then
        echo "Steps: $ALL_STEPS"
        return 0
    fi

    # get step execute from
    FOUND="false"
    STEPS=""
    for S in ${ALL_STEPS[@]}; do
        if [ $FOUND = "true" -o "${STEP}" = "${S}" ]; then
            FOUND="true"
            STEPS="$STEPS $S"
        fi
    done

    # execute steps
    load_globals

    execute_step "configuration_install" "${STEPS}"
    execute_step "sanitize_variables" "${STEPS}"
    execute_step "check_variables" "${STEPS}"
    execute_step "warning" "${STEPS}"
    execute_step "init" "${STEPS}"
    execute_step "facts" "${STEPS}"
    execute_step "checks" "${STEPS}"
    execute_step "prepare" "${STEPS}"
    execute_step "partition" "${STEPS}"
    execute_step "install" "${STEPS}"
    execute_step "configuration" "${STEPS}"
    execute_step "mkinitcpio_configuration" "${STEPS}"
    if [ -n "$DISPLAY_DRIVER" ]; then
        execute_step "display_driver" "${STEPS}"
    fi
    execute_step "kernels" "${STEPS}"
    execute_step "mkinitcpio" "${STEPS}"
    execute_step "network" "${STEPS}"
    if [ "$VIRTUALBOX" == "true" ]; then
        execute_step "virtualbox" "${STEPS}"
    fi
    execute_step "users" "${STEPS}"
    execute_step "bootloader" "${STEPS}"
    if [ -n "$CUSTOM_SHELL" ]; then
        execute_step "custom_shell" "${STEPS}"
    fi
    if [ -n "$DESKTOP_ENVIRONMENT" ]; then
        execute_step "desktop_environment" "${STEPS}"
    fi
    execute_step "packages" "${STEPS}"
    if [ "$VAGRANT" == "true" ]; then
        execute_step "vagrant" "${STEPS}"
    fi
    execute_step "systemd_units" "${STEPS}"
    execute_step "end" "${STEPS}"
}

main $@

alis.sh

You can download the example complete source code from the Blog Bitix examples repository hosted on GitHub.