anchor.diff:  
   let
     inherit (stdenv.lib)
  -    enFlag
  -    wtFlag;
  +    boolEn
  +    boolWt;
   
     version = "2.2.0";
   in
  
positive.code:     "--without-java"
      "--without-perl"
      "--without-php"
      (wtFlag "python" (python2 != null) null)
    ];
  
    preInstall = ''
  
negative.code:     "--localstatedir=/var"
      "--sysconfdir=/etc"
      "--disable-mallinfo"
      "--${boolEn (libpaper != null)}-libpaper"
      "--${boolEn (libusb != null)}-libusb"
      #--enable-tcp-wrappers
      "--${boolEn (acl != null)}-acl"
      "--${boolEn (dbus != null)}-dbus"
      "--enable-shared"
      "--disable-libtool-unsupported"
      "--disable-debug"
  