anchor.diff:  
   let
     inherit (stdenv.lib)
  -    enFlag
  -    wtFlag;
  +    boolEn
  +    boolWt;
   
     version = "2.2.0";
   in
  
positive.code:     #"--enable-relro"
      #(enFlag "gssapi" (kerberos != null) null)
      "--enable-threads"
      (enFlag "ssl" (
        gnutls != null
        && libgcrypt != null) null)
      (enFlag "pam" (pam != null) null)
      (enFlag "gnutls" (
        gnutls != null
        && libgcrypt != null) null)
      (enFlag "avahi" (avahi != null) null)
      "--disable-dnssd"
      "--disable-launchd"
      (enFlag "systemd" (systemd_lib != null) null)
      #"--enable-page-logging"
      #"--enable-browsing"
      #"--enable-default-shared"
      "--enable-raw-printing"
      #"--enable-webif"
      # "--with-dbusdir$out/etc/dbus-1"
      "--with-components=all"
      # --with-cachedir
      # --with-icondir
  
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"
  