anchor.diff:  
         distributedBuilds = mkOption {
           default = false;
  -        description = "
  +        description = ''
             Whether to distribute builds to the machines listed in
             <option>nix.buildMachines</option>.
  -          If you know that the <option>buildMachines</option> are not
  -          always available either use nixos
  -          <command>nixos-rebuild --no-build-hook</command>
  -          or consider managing <filename>/etc/nix.machines</filename> manually
  -          by setting <option>manualNixMachines</option>. Then you can comment
  -          unavailable build machines.
  -        ";
  -      };
  -
  -      manualNixMachines = mkOption {
  -        default = false;
  -        description = "
  -          Whether to manually manage the list of build machines used in distributed
  -          builds in /etc/nix.machines.
  -        ";
  +        '';
         };
   
         daemonNiceLevel = mkOption {
  
positive.code:           key should be added to
            <filename>~<replaceable>sshUser</replaceable>/authorized_keys</filename>
            on the remote machine.
          ";
        };
  
        proxy = mkOption {
  
negative.code:       };
  
        buildMachines = mkOption {
          default = [];
          example = [
            { hostName = "voila.labs.cs.uu.nl";
              sshUser = "nix";
  