anchor.diff:  
       sendmail = "${pkgs.ssmtp}/sbin/sendmail";
       
  -    inherit (pkgs) libxslt enscript db4 coreutils bzip2;
  +    inherit (pkgs) libxslt enscript db4 coreutils diffutils bzip2 python;
   
       inherit (serverInfo) canonicalName;
   
  
positive.code:       fi
      '';
    };
  
    
    # Build our custom authentication modules.
  
negative.code:     # The variables to substitute:
      
      inherit reposDir dbDir logDir distsDir backupsDir tmpDir
        urlPrefix adminAddr fsType subversion postCommitHook mailer;
      inherit (config) notificationSender userCreationDomain;
      orgUrl = config.organisation.url;
      orgLogoUrl = config.organisation.logo;
  