anchor.diff:      options.
     '';
   
  +  hashedPasswordDescription = ''
  +    To generate hashed password install <literal>mkpassword</literal>
  +    package and run <literal>mkpasswd -m sha-512</literal>.
  +  '';
  +
     userOpts = { name, config, ... }: {
   
       options = {
  
positive.code:       type = types.bool;
        default = true;
        description = ''
          If true, you are free to add new users and groups to the system
          with the ordinary <literal>useradd</literal> and
          <literal>groupadd</literal> commands. On system activation, the
          existing contents of the <literal>/etc/passwd</literal> and
          <literal>/etc/group</literal> files will be merged with the
          contents generated from the <literal>users.extraUsers</literal> and
          <literal>users.extraGroups</literal> options. If
          <literal>mutableUsers</literal> is false, the contents of the user and
          group files will simply be replaced on system activation. This also
          holds for the user passwords; if this option is false, all changed
          passwords will be reset according to the
          <literal>users.extraUsers</literal> configuration on activation. If
          this option is true, the initial password for a user will be set
          according to <literal>users.extraUsers</literal>, but existing passwords
          will not be changed.
        '';
      };
  
  
negative.code:         description = ''
            Specifies the hashed password for the user.
            ${passwordDescription}
            ${hashedPasswordDescription}
          '';
        };
  
  