pythonPackages.ecdsa: refactor move to python-modjules

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

@@ -0,0 +1,26 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, pkgs
+}:
+
+buildPythonPackage rec {
+  pname = "ecdsa";
+  version = "0.13";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1yj31j0asmrx4an9xvsaj2icdmzy6pw0glfpqrrkrphwdpi1xkv4";
+  };
+
+  # Only needed for tests
+  buildInputs = [ pkgs.openssl ];
+
+  meta = with stdenv.lib; {
+    description = "ECDSA cryptographic signature library";
+    homepage = "https://github.com/warner/python-ecdsa";
+    license = licenses.mit;
+    maintainers = with maintainers; [ aszlig ];
+  };
+
+}