install.sh

#!/usr/bin/bash

set -eu

echo "Checking UEFI boot mode"
test -d /sys/firmware/efi/efivars

echo "Updating system clock"
timedatectl set-timezone Europe/Paris
timedatectl set-ntp true

echo "Preparing disk"
for dev in /dev/vda1 /dev/vda2; do
	if grep $dev /etc/mtab -q; then
		umount $dev
	fi
done
sgdisk -o -Z -n 1:0:+500M -t 1:ef00 -n 2:0:0 -t 2:8304 /dev/vda
mkfs.fat -F 32 /dev/vda1
mkfs.xfs -f -m bigtime=1,rmapbt=1 /dev/vda2
mount /dev/vda2 /mnt
mkdir /mnt/boot
mount /dev/vda1 /mnt/boot

echo "Fetching chroot script"
# Done as early as possible (after preparing the location to save it to) in
# case internet connectivity is not working.
src="https://raw.githubusercontent.com/neitsab/archvm/master/chroot.sh"
dst="/mnt/chroot.sh"
curl "$src" > "$dst"
chmod +x "$dst"

echo "Configuring mirrorlist"
# disable reflector service to prevent it from overwriting our manual settings
systemctl disable --now reflector
cat << 'EOF' > /etc/pacman.d/mirrorlist
################################################################################
################# Arch Linux mirrorlist generated by hand ######################
################################################################################

# With:       La mano
# When:       2022-03-11 15:46:33 UTC
# From:       https://archlinux.org/mirrors/status/#successful

Server = https://mirror.f4st.host/archlinux/$repo/os/$arch
Server = https://archlinux.mailtunnel.eu/$repo/os/$arch
Server = https://mirror.cyberbits.eu/archlinux/$repo/os/$arch
EOF

echo "Installing base"
pacstrap /mnt \
        base linux efibootmgr \
        micro terminus-font \
        grml-zsh-config zsh-completions zsh-syntax-highlighting \
        xfsprogs dosfstools \
        sudo

echo "Preparing system with systemd-firstboot"
systemd-firstboot --root=/mnt \
            --locale=fr_FR.UTF-8 \
            --keymap=fr-latin9 \
            --timezone=Europe/Paris \
            --hostname=archvm \
            --root-shell=/usr/bin/zsh \
            --force

echo "Set up systemd-resolved symlink"
ln -sf /run/systemd/resolve/stub-resolv.conf /mnt/etc/resolv.conf

echo "Run chroot script"
arch-chroot /mnt /chroot.sh

echo "Unmounting virtual drive"
umount -R /mnt

echo "Installation complete. You can now:"
echo "  - Shutdown the VM using \`poweroff\`"
echo "  - Remove the installation media"
echo "  - restart the VM"