meta: Refactor install scripts

Lots of changes here with the goal of streamlining the installation
process. The install scripts work very well now, although there are
still some final changes that I would like to make (notably the removal
of the unzip requirement and the inclusion of more options to automate
the process even further).

.archlinux/install-scripts/001-preinstall

@@ -1,7 +1,6 @@
 #!/bin/sh
 #
-# This script assumes you already have an active internet connection
-# (preferably through Ethernet).
+# Make partitions
 #
 # https://wiki.archlinux.org/index.php/Installation_guide
 
@@ -14,9 +13,9 @@ timedatectl set-ntp true
 # enable boot for it. Then, create a primary swap partition with
 # the remaining disk space.
 parted /dev/sda mklabel msdos
-parted /dev/sda mkpart primary ext4 1MiB 60GiB
+parted /dev/sda mkpart primary ext4 1MiB "$DISTSIZE"GiB
 parted /dev/sda set 1 boot on
-parted /dev/sda mkpart primary linux-swap 60GiB 100%
+parted /dev/sda mkpart primary linux-swap "$DISTSIZE"GiB 100%
 
 # Format sda1 with ext4 and sda2 with swap
 mkfs -t ext4 /dev/sda1

.archlinux/install-scripts/002-install

@@ -1,13 +1,9 @@
 #!/bin/sh
 #
-# Install the base packages to the mounted partition (the newly
-# created filesystem).
-#
-# We also install grub and fish since grub is the boot loader
-# and fish is the preferred shell.
+# Install packages to new filesystem
 #
 # https://wiki.archlinux.org/index.php/Installation_guide
 
 set -xe
 
-pacstrap /mnt base base-devel grub fish
+pacstrap /mnt base base-devel grub fish polkit rng-tools

.archlinux/install-scripts/003-configure

@@ -1,15 +1,11 @@
 #!/bin/sh
 #
-# Once this script finishes, change the root password with passwd,
-# then unmount /mnt (with umount) and restart the system.
+# Core system configs
 #
 # https://wiki.archlinux.org/index.php/Installation_guide
 
 set -xe
 
-echo -n "Enter a hostname for this machine: "
-read HOSTNAME
-
 # Generate the fstab file (so the filesystem is mounted on boot)
 genfstab -U /mnt > /mnt/etc/fstab
 
@@ -27,18 +23,19 @@ echo "127.0.0.1 localhost"                          >> /mnt/etc/hosts
 echo "::1       localhost"                          >> /mnt/etc/hosts
 echo "127.0.1.1 $HOSTNAME.localdomain $HOSTNAME"    >> /mnt/etc/hosts
 
-# Set the language to English and use the en_US.UTF-8 locale.
-echo "LANG=en_US.UTF-8"  > /mnt/etc/locale.conf
-echo "en_US.UTF-8 UTF-8" > /mnt/etc/locale.gen
-
-# Generate the locale.
+# Declare which locales we want to generate and generate them
+sed -i '/#en_US.UTF-8 UTF-8/s/^#//g' /mnt/etc/locale.gen
+sed -i '/#fr_FR.UTF-8 UTF-8/s/^#//g' /mnt/etc/locale.gen
+sed -i '/#ja_JP.UTF-8 UTF-8/s/^#//g' /mnt/etc/locale.gen
 arch-chroot /mnt locale-gen
 
-# Explicitly set the keymap to US.
-echo "KEYMAP=us" > /mnt/etc/vconsole.conf
+# Set the system locale to the generated en_US.UTF-8
+echo "LANG=en_US.UTF-8" > /mnt/etc/locale.conf
 
-# Change the terminal font to a larger one (`latarcyrheb-sun32` is also an option)
-echo "FONT=ter-132n" >> /mnt/etc/vconsole.conf
+# Set the tty font to a larger one (same as the default setfont, but larger)
+if [ "$HIDPI" == "YES" ]; then
+  echo "FONT=latarcyrheb-sun32" > /mnt/etc/vconsole.conf
+fi
 
 # Install grub to the primary partition.
 arch-chroot /mnt grub-install /dev/sda
@@ -51,8 +48,3 @@ arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg
 
 # Change the shell of the root account to fish.
 arch-chroot /mnt chsh -s /usr/bin/fish
-
-# Save our hardware information with mkinitcpio. This creates
-# an initial ramdisk environment that allows us to boot the
-# Linux kernel.
-arch-chroot /mnt mkinitcpio -p linux

.archlinux/install-scripts/004-postinstall

@@ -1,30 +1,38 @@
 #!/bin/sh
 #
-# Common post-install system configuration that doesn't involve any
-# external packages (besides fish)
+# Higher-level configs
 #
 # https://wiki.archlinux.org/index.php/General_recommendations
 
 set -xe
 
-echo -n "Enter a username for the local account with administrative rights: "
-read USERNAME
+# Create the output directories if they don't exist yet
+arch-chroot /mnt mkdir -p /etc/systemd/system/multi-user.target.wants
+arch-chroot /mnt mkdir -p /etc/systemd/system/sysinit.target.wants
 
-# Start and enable the DHCP client daemon service
-systemctl enable --now dhcpcd.service
+# Enable the DHCP client daemon service
+arch-chroot /mnt ln -sf /usr/lib/systemd/system/dhcpcd.service \
+                        /etc/systemd/system/multi-user.target.wants/dhcpcd.service
 
-# Sync the time periodically with a remote server
-timedatectl set-ntp true
+# Enable the timesync daemon service (sync the time periodically with a remote server)
+arch-chroot /mnt ln -sf /usr/lib/systemd/system/systemd-timesyncd.service \
+                        /etc/systemd/system/sysinit.target.wants/systemd-timesyncd.service
+
+# Enable the rng-tools daemon
+arch-chroot /mnt ln -sf /usr/lib/systemd/system/rngd.service \
+                        /etc/systemd/system/sysinit.target.wants/rngd.service
 
 # Enable colors in pacman by uncommenting the Color line.
-sed -i '/Color/s/^#//g' /etc/pacman.conf
-sed -i '/VerbosePkgLists/s/^#//g' /etc/pacman.conf
+sed -i '/Color/s/^#//g' /mnt/etc/pacman.conf
+
+# Show package upgrades as a list
+sed -i '/VerbosePkgLists/s/^#//g' /mnt/etc/pacman.conf
 
 # Give users in the wheel group permission to use sudo
-echo "%wheel ALL=(ALL) ALL" >> /etc/sudoers
+echo "%wheel ALL=(ALL) ALL" > /mnt/etc/sudoers.d/01_wheel_all
 
 # Create a new user account with sudo privileges and the fish shell.
 arch-chroot /mnt useradd -m -g users -G wheel -s /usr/bin/fish "$USERNAME"
 
-# Then, set the password equal to the username (change this later).
-echo "$USERNAME:$USERNAME" | chpasswd
+# Lock the root account (i.e. disable root login)
+arch-chroot /mnt passwd -l root

.archlinux/install-scripts/install.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+# Simple Arch Linux install scripts, tailored to my use case.
+
+# End the script on any errors
+set -e
+
+# Change the working directory to this one
+cd "$(dirname "$0")"
+
+# Prompt for the required information
+
+echo -n "Enter the size (in GiB) to give the primary partition: "
+read DISTSIZE
+
+echo -n "Enter a username for the user with sudo rights: "
+read USERNAME
+
+echo -n "Enter a hostname for this machine ($USERNAME@_____): "
+read HOSTNAME
+
+echo -n "Type YES to enable HiDPI support in the virtual console: "
+read HIDPI
+
+echo "-----------------------------------------------------"
+echo "Arch Linux will be installed with the settings above."
+echo "NOTE: You should not run this script if you do not"
+echo "      understand what it does. Bad things may happen."
+echo -n "Type YES to continue, or Ctrl+C to abort. "
+read CONFIRM
+
+if [ "$CONFIRM" != "YES" ]; then
+  echo "YES was not given, exiting..."
+  exit
+fi
+
+echo "====================================================="
+echo "Running install scripts..."
+
+# Run the install scripts
+env DISTSIZE="$DISTSIZE"                ./001-preinstall
+                                        ./002-install
+env HOSTNAME="$HOSTNAME" HIDPI="$HIDPI" ./003-configure
+env USERNAME="$USERNAME"                ./004-postinstall
+
+echo "Enter a password for $USERNAME..."
+arch-chroot /mnt passwd "$USERNAME"
+
+echo "====================================================="
+echo "Done. Now reboot into Arch Linux!"