Install Nix in Multiuser mode

This command won't work in fish shell, be sure to be using bash or zsh

sh <(curl -L https://nixos.org/nix/install) --daemon

Approve the sudo commands and let it install, once it's done, it may not have properly modified your environment.

For zsh, I added this to my ~/.zshrc:

source /etc/profile.d/nix.sh

For fish, I created a new file named nix.fish in ~/.config/fish/conf.d/ :

#!/usr/bin/env fish
bass source /etc/profile.d/nix.sh

To hide the nixbld1-32 users from login, the following things needed to happen:

GDM: For nixbld1 through 32 (this is just nixbld1)

sudo cp /var/lib/AccountsService/users/{gdm,nixbld1}

SDDM: edit /etc/sddm.conf

add or edit [Users] section:

[Users]
HideShells=/sbin/nologin

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