Setup (nix)[https://nixos.org/nix/] on Arch Linux

setup_nix.sh

#!/bin/sh

# Install nix via yay (AUR helper)
yay -S archlinux-nix

# Read: https://nixos.org/nix/manual/#ssec-multi-user

# Add nix builder groups
sudo groupadd -r nixbld
for n in $(seq 1 10); do sudo useradd -c "Nix build user $n" \
    -d /var/empty -g nixbld -G nixbld -M -N -r -s "$(which nologin)" \
    nixbld$n; done

# Source env variables
. /etc/profile.d/nix.sh

# Running the daemon
sudo nix-daemon & disown
export NIX_REMOTE=daemon

# Add and update channel
nix-channel --add https://nixos.org/channels/nixpkgs-unstable
sudo nix-channel --update
nix-env -u

# Check if running
# nix-shell -p hello --run hello