Add GNU Nettle, a cryptographic library.

svn path=/nixpkgs/trunk/; revision=16127

pkgs/development/libraries/nettle/default.nix

@@ -0,0 +1,44 @@
+{ fetchurl, stdenv }:
+
+stdenv.mkDerivation rec {
+  name = "nettle-2.0";
+
+  src = fetchurl {
+    # Eventually use `mirror://gnu/'.
+    url = "ftp://ftp.lysator.liu.se/pub/security/lsh/${name}.tar.gz";
+    sha256 = "1mnb2zx6yxfzkkv8hnrjzhjviybd45z92wq4y5sv1gskp4qf5fb5";
+  };
+
+  doCheck = true;
+
+  meta = {
+    description = "GNU Nettle, a cryptographic library";
+
+    longDescription = ''
+        Nettle is a cryptographic library that is designed to fit
+        easily in more or less any context: In crypto toolkits for
+        object-oriented languages (C++, Python, Pike, ...), in
+        applications like LSH or GNUPG, or even in kernel space.  In
+        most contexts, you need more than the basic cryptographic
+        algorithms, you also need some way to keep track of available
+        algorithms, their properties and variants.  You often have
+        some algorithm selection process, often dictated by a protocol
+        you want to implement.
+
+        And as the requirements of applications differ in subtle and
+        not so subtle ways, an API that fits one application well can
+        be a pain to use in a different context.  And that is why
+        there are so many different cryptographic libraries around.
+
+        Nettle tries to avoid this problem by doing one thing, the
+        low-level crypto stuff, and providing a simple but general
+        interface to it.  In particular, Nettle doesn't do algorithm
+        selection.  It doesn't do memory allocation. It doesn't do any
+        I/O.
+     '';
+
+     license = "GPLv2+";
+
+     maintainers = [ stdenv.lib.maintainers.ludo ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3861,6 +3861,10 @@ let
     inherit ncurses flex bison;
   };
 
+  nettle = import ../development/libraries/nettle {
+    inherit fetchurl stdenv;
+  };
+
   nss = import ../development/libraries/nss {
     inherit fetchurl stdenv perl zip;
   };