tcpcrypt: add current HEAD of the Github master branch

pkgs/tools/security/tcpcrypt/default.nix

@@ -0,0 +1,28 @@
+{ fetchurl, stdenv
+, openssl, libcap, libnfnetlink, libnetfilter_queue
+}:
+
+let
+  rev = "0e07772316061ad67b8770e7d98d5dd099c9c7c7";
+in
+stdenv.mkDerivation rec {
+  name = "tcpcrypt-2011.07.22";
+
+  src = fetchurl {
+    url = "https://github.com/sorbo/tcpcrypt/archive/${rev}.tar.gz";
+    sha256 = "1f1f1iawlvipnccwh31fxnb8yam1fgh36m0qcbc29qk1ggwrfnkk";
+    name = "${name}.tar.gz";
+  };
+
+  buildInputs = [ openssl libcap libnfnetlink libnetfilter_queue ];
+
+  preConfigure = "cd user";
+
+  meta = {
+    homepage = "http://tcpcrypt.org/";
+    description = "enable opportunistic encryption of all TCP traffic";
+
+    maintainers = [ stdenv.lib.maintainers.simons ];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1794,6 +1794,8 @@ let
 
   tarsnap = callPackage ../tools/backup/tarsnap { };
 
+  tcpcrypt = callPackage ../tools/security/tcpcrypt { };
+
   tcpdump = callPackage ../tools/networking/tcpdump { };
 
   teamviewer = callPackage_i686 ../applications/networking/remote/teamviewer { };