Add re2, an efficient, principled regular expression library

pkgs/development/libraries/re2/default.nix

@@ -0,0 +1,22 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "re2";
+  version = "20130802";
+
+  src = fetchurl {
+    url = "https://re2.googlecode.com/files/${name}-${version}.tgz";
+    sha256 = "12yxbjsnc1ym7jny470wbnb6h3rgsfv0z75vdp12npklck5nmwhp";
+  };
+
+  preConfigure = ''
+    substituteInPlace Makefile --replace "/usr/local" "$out"
+  '';
+
+  meta = {
+    homepage = https://code.google.com/p/re2/;
+    description = "An efficient, principled regular expression library";
+    license = with stdenv.lib.licenses; bsd3;
+    platforms = with stdenv.lib.platforms; all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5178,6 +5178,8 @@ let
 
   ptlib = callPackage ../development/libraries/ptlib {};
 
+  re2 = callPackage ../development/libraries/re2 { };
+
   qca2 = callPackage ../development/libraries/qca2 {};
 
   qca2_ossl = callPackage ../development/libraries/qca2/ossl.nix {};