diff --git a/pkgs/development/python-modules/yolk/default.nix b/pkgs/development/python-modules/yolk/default.nix
new file mode 100644
index 000000000000..7cfcb1e0f0d0
--- /dev/null
+++ b/pkgs/development/python-modules/yolk/default.nix
@@ -0,0 +1,23 @@
+{ lib, fetchurl, buildPythonApplication, pythonPackages }:
+
+with lib;
+
+buildPythonApplication rec {
+  name = "yolk-${version}";
+  version = "0.4.3";
+
+  src = fetchurl {
+    url = "https://pypi.python.org/packages/source/y/yolk/yolk-${version}.tar.gz";
+    sha256 = "1f6xwx210jnl5nq0m3agh2p1cxmaizawaf3fwq43q4yw050fn1qw";
+  };
+
+  buildInputs = with pythonPackages; [ nose ];
+
+  meta = {
+    description = "Command-line tool for querying PyPI and Python packages installed on your system";
+    homepage = "https://github.com/cakebread/yolk";
+    maintainer = with maintainers; [ profpatsch ];
+    license = licenses.bsd3;
+  };
+}
+
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index dfaf8819af16..066b443c4303 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9413,10 +9413,12 @@ in
 
   slowaes = pythonPackages.slowaes;
 
+  twisted = pythonPackages.twisted;
+
   wxPython = pythonPackages.wxPython;
   wxPython28 = pythonPackages.wxPython28;
 
-  twisted = pythonPackages.twisted;
+  yolk = callPackage ../development/python-modules/yolk {};
 
   ZopeInterface = pythonPackages.zope_interface;