Adding ecryptfs, and one of its dependencies: keyutils.

(I have not tried whether they work)

svn path=/nixpkgs/trunk/; revision=19645

pkgs/tools/security/ecryptfs/default.nix

@@ -0,0 +1,18 @@
+{stdenv, fetchurl, fuse, python, perl, keyutils, pam, nss, nspr}:
+stdenv.mkDerivation {
+  name = "ecryptfs-82";
+
+  src = fetchurl {
+    url = http://launchpad.net/ecryptfs/trunk/82/+download/ecryptfs-utils_82.orig.tar.gz;
+    sha256 = "1w3swispgp71prz8h56hqby2wwnvam5vllqvc69rn8cf605i69a6";
+  };
+
+  NIX_CFLAGS_COMPILE = "-I${nspr}/include/nspr -I${nss}/include/nss";
+
+  buildInputs = [ python perl keyutils pam nss nspr ];
+
+  meta = {
+    description = "Enterprise-class stacked cryptographic filesystem";
+    license = "GPLv2+";
+  };
+}