diff --git a/pkgs/development/libraries/libgcrypt/default.nix b/pkgs/development/libraries/libgcrypt/default.nix
new file mode 100644
index 000000000000..bb71e8f8499c
--- /dev/null
+++ b/pkgs/development/libraries/libgcrypt/default.nix
@@ -0,0 +1,11 @@
+{stdenv, fetchurl, libgpgerror}:
+
+stdenv.mkDerivation {
+  name = "libgcrypt-1.2.4";
+  src = fetchurl {
+    url = ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.2.4.tar.gz;
+    sha256 = "1v6rbx2jpwvh9jwf8n91da2p66v2gzmym6s3h1fidfdy7qqkyg6g";
+  };
+
+  buildInputs = [libgpgerror];
+}
diff --git a/pkgs/development/libraries/libotr/default.nix b/pkgs/development/libraries/libotr/default.nix
new file mode 100644
index 000000000000..092dad800808
--- /dev/null
+++ b/pkgs/development/libraries/libotr/default.nix
@@ -0,0 +1,11 @@
+{stdenv, fetchurl, libgcrypt}:
+
+stdenv.mkDerivation {
+  name = "libotr-3.1.0";
+  src = fetchurl {
+    url = http://www.cypherpunks.ca/otr/libotr-3.1.0.tar.gz;
+    sha256 = "1x3y5nvqcg9a0lx630cvkjpwv7mmwxpy4pcjfm6fbiqylaxn05bj";
+  };
+
+  buildInputs = [libgcrypt];
+}