<chapter xmlns="http://docbook.org/ns/docbook"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xmlns:xi="http://www.w3.org/2001/XInclude"
      version="5.0"
      xml:id="ch-upgrading-nix">

  <title>Upgrading Nix</title>

  <para>
    Multi-user Nix users on macOS can upgrade Nix by running
    <command>sudo -i sh -c 'nix-channel --update &amp;&amp; nix-env
    -iA nixpkgs.nix'; sudo launchctl stop org.nixos.nix-daemon; sudo
    launchctl start org.nixos.nix-daemon</command>.
  </para>

  <para>
    Single-user installations of Nix should run <command>nix-channel
    --update; nix-env -iA nixpkgs.nix</command>.
  </para>

</chapter>

<chapter xmlns="http://docbook.org/ns/docbook"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xmlns:xi="http://www.w3.org/2001/XInclude"
      version="5.0"
      xml:id="ch-upgrading-nix">

  <title>Upgrading Nix</title>

  <para>
    Multi-user Nix users on macOS can upgrade Nix by running:
    <command>sudo -i sh -c 'nix-channel --update &amp;&amp;
    nix-env -iA nixpkgs.nix &amp;&amp;
    launchctl remove org.nixos.nix-daemon &amp;&amp;
    launchctl load /Library/LaunchDaemons/org.nixos.nix-daemon.plist'</command>
  </para>


  <para>
    Single-user installations of Nix should run this:
    <command>nix-channel --update; nix-env -iA nixpkgs.nix</command>
  </para>
</chapter>

Upgrade docs: improve the upgrade command
Upgrade docs: improve the upgrade command

and make it more copy-pastable.
