My script to install Arch on my machines.

arch-install

#!/bin/bash
set -e

parted -s /dev/sda \
        mklabel gpt \
        mkpart primary 1MiB 2GiB \
        mkpart primary 2GiB 40GiB \

mkfs.fat /dev/sda1

pvcreate /dev/sda2
vgcreate vg00 /dev/sda2
lvcreate -L 100MB vg00 -n darchconfig
lvcreate -L 20GiB vg00 -n darchlib
lvcreate -L 15GiB vg00 -n root
lvcreate -l 100%FREE vg00 -n home

mkfs.ext4 /dev/mapper/vg00-darchconfig
mkfs.ext4 /dev/mapper/vg00-darchlib
mkfs.ext4 /dev/mapper/vg00-root
mkfs.ext4 /dev/mapper/vg00-home

mount /dev/mapper/vg00-root /mnt
mkdir -p /mnt/etc/darch
mount /dev/mapper/vg00-darchconfig /mnt/etc/darch
mkdir -p /mnt/var/lib/darch
mount /dev/mapper/vg00-darchlib /mnt/var/lib/darch
mkdir /mnt/boot
mount /dev/sda1 /mnt/boot
mkdir /mnt/home
mount /dev/mapper/vg00-home /mnt/home

pacstrap /mnt base base-devel zsh

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

echo "en_US.UTF-8 UTF-8" > /mnt/etc/locale.gen  
echo "en_US ISO-8859-1" >> /mnt/etc/locale.gen 
arch-chroot /mnt locale-gen

rm /mnt/etc/localtime
ln -s ../usr/share/zoneinfo/US/Eastern /mnt/etc/localtime

echo "[Match]\nName=en*\n[Network]\nDHCP=ipv4" > /mnt/etc/systemd/network/wired-dhcp.network
arch-chroot /mnt systemctl enable systemd-networkd
arch-chroot /mnt systemctl enable systemd-resolved

echo "Enter root password..."
arch-chroot /mnt passwd

arch-chroot /mnt useradd -m -g users -G wheel,storage,power -s /bin/zsh pknopf
echo "pknopf ALL=(ALL) ALL" > /mnt/etc/sudoers.d/pknopf

echo "Enter user password..."
arch-chroot /mnt passwd pknopf

arch-chroot /mnt pacman -S --noconfirm grub efibootmgr
arch-chroot /mnt grub-install /dev/sda --target=x86_64-efi --efi-directory=/boot
arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg

# Add lvm2 to our initcpio.
sed -i 's/HOOKS=.*/HOOKS="base udev autodetect modconf block lvm2 filesystems keyboard fsck"/' /mnt/etc/mkinitcpio.conf
arch-chroot /mnt mkinitcpio -p linux