pythonPackages.ROPGadget : move to separate expression

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

@@ -0,0 +1,22 @@
+{ stdenv, buildPythonPackage, fetchPypi
+, capstone}:
+
+buildPythonPackage rec {
+  pname = "ROPGadget";
+  version = "5.4";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "19wly4x3mq73c91pplqjk0c7sx6710887czh514qk5l7j0ky6dxg";
+  };
+
+  propagatedBuildInputs = [ capstone ];
+
+  meta = with stdenv.lib; {
+    description = "Tool to search for gadgets in binaries to facilitate ROP exploitation";
+    homepage = "http://shell-storm.org/project/ROPgadget/";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ bennofs ];
+  };
+}