python.pkgs.beaker: move expression

pkgs/development/python-modules/beaker/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, nose
+, mock
+, webtest
+, sqlalchemy
+, pycrypto
+, isPy27
+, funcsigs
+, pycryptopp
+}:
+
+buildPythonPackage rec {
+  pname = "Beaker";
+  version = "1.8.0";
+
+  # The pypy release do not contains the tests
+  src = fetchFromGitHub {
+    owner = "bbangert";
+    repo = "beaker";
+    rev = "${version}";
+    sha256 = "17yfr7a307n8rdl09was4j60xqk2s0hk0hywdkigrpj4qnw0is7g";
+  };
+
+  buildInputs =
+    [ nose
+      mock
+      webtest
+    ];
+  propagatedBuildInputs = [
+    sqlalchemy
+    pycrypto
+  ] ++ lib.optionals (isPy27) [
+    funcsigs
+    pycryptopp
+  ];
+
+  meta = {
+    description = "A Session and Caching library with WSGI Middleware";
+    maintainers = with lib.maintainers; [ garbas domenkozar ];
+  };
+}