Adding gnunet-svn and libgcrypt-git.

gnunet-svn can't interoperate with gnunet.

pkgs/development/libraries/libgcrypt/git.nix

@@ -0,0 +1,48 @@
+{ fetchgit, stdenv, libgpgerror, autoconf, automake, libtool, transfig, ghostscript, texinfo }:
+
+stdenv.mkDerivation rec {
+  name = "libgcrypt-git-20130524";
+
+  src = fetchgit {
+    url = git://git.gnupg.org/libgcrypt.git;
+    rev = "99b18aa53";
+    sha256 = "1rhbpxqrkfszlv8jvw8s4apwklal07k8zxv5q555l7binc1j1j3z";
+  };
+
+  nativeBuildInputs = [ autoconf automake libtool transfig ghostscript texinfo ];
+
+  propagatedBuildInputs = [ libgpgerror ];
+
+  preConfigure = ''
+    sh autogen.sh
+  '';
+
+  preBuild = ''
+    (cd doc; make stamp-vti)
+  '';
+
+  doCheck = true;
+
+  # For some reason the tests don't find `libgpg-error.so'.
+  checkPhase = ''
+    LD_LIBRARY_PATH="${libgpgerror}/lib:$LD_LIBRARY_PATH" \
+    make check
+  '';
+
+  meta = {
+    description = "GNU Libgcrypt, a general-pupose cryptographic library";
+
+    longDescription = ''
+      GNU Libgcrypt is a general purpose cryptographic library based on
+      the code from GnuPG.  It provides functions for all
+      cryptographic building blocks: symmetric ciphers, hash
+      algorithms, MACs, public key algorithms, large integer
+      functions, random numbers and a lot of supporting functions.
+    '';
+
+    license = "LGPLv2+";
+
+    homepage = https://www.gnu.org/software/libgcrypt/;
+    platforms = stdenv.lib.platforms.all;
+  };
+}