Instructions to delete Nix-1.11.13 from a Darwin system

uninstall-nix-1.11.13-darwin.txt

Uninstalling nix:
1. Delete /Library/LaunchDaemons/org.nixos.nix-daemon.plist

  sudo launchctl unload /Library/LaunchDaemons/org.nixos.nix-daemon.plist
  sudo rm /Library/LaunchDaemons/org.nixos.nix-daemon.plist

2. Restore /etc/profile.backup-before-nix back to /etc/profile

  sudo mv /etc/profile.backup-before-nix /etc/profile

(after this one, you may need to re-open any terminals that were
opened while it existed.)

3. Restore /etc/bashrc.backup-before-nix back to /etc/bashrc

  sudo mv /etc/bashrc.backup-before-nix /etc/bashrc

(after this one, you may need to re-open any terminals that were
opened while it existed.)

4. Restore /etc/zshrc.backup-before-nix back to /etc/zshrc

  sudo mv /etc/zshrc.backup-before-nix /etc/zshrc

(after this one, you may need to re-open any terminals that were
opened while it existed.)

5. Delete the files Nix added to your system:

  sudo rm -rf /etc/nix /nix /var/root/.nix-profile /var/root/.nix-defexpr /var/root/.nix-channels /Users/$USER/.nix-profile /Users/$USER/.nix-defexpr /Users/$USER/.nix-channels