diff --git a/pkgs/development/python-modules/partd/default.nix b/pkgs/development/python-modules/partd/default.nix
new file mode 100644
index 00000000000..da0ffe07de9
--- /dev/null
+++ b/pkgs/development/python-modules/partd/default.nix
@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytest
+, locket
+, numpy
+, pandas
+, pyzmq
+, toolz
+}:
+
+buildPythonPackage rec {
+  pname = "partd";
+  version = "0.3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "066d254d2dh9xcanffgkjgwxpz5v0059b063bij10fvzl2y49hzx";
+  };
+
+  checkInputs = [ pytest ];
+
+  propagatedBuildInputs = [ locket numpy pandas pyzmq toolz ];
+
+  checkPhase = ''
+    rm partd/tests/test_zmq.py # requires network & fails
+    py.test
+  '';
+
+  meta = {
+    description = "Appendable key-value storage";
+    license = with lib.licenses; [ bsd3 ];
+    homepage = https://github.com/dask/partd/;
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 13189b0df90..446b2b7f4f0 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -12656,30 +12656,7 @@ in {
 
   parso = callPackage ../development/python-modules/parso { };
 
-  partd = buildPythonPackage rec {
-    name = "partd-${version}";
-    version = "0.3.7";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/p/partd/${name}.tar.gz";
-      sha256 = "066d254d2dh9xcanffgkjgwxpz5v0059b063bij10fvzl2y49hzx";
-    };
-
-    buildInputs = with self; [ pytest ];
-
-    propagatedBuildInputs = with self; [ locket numpy pandas pyzmq toolz ];
-
-    checkPhase = ''
-      rm partd/tests/test_zmq.py # requires network & fails
-      py.test
-    '';
-
-    meta = {
-      description = "Appendable key-value storage";
-      license = with licenses; [ bsd3 ];
-      homepage = https://github.com/dask/partd/;
-    };
-  };
+  partd = callPackage ../development/python-modules/partd { };
 
   patch = buildPythonPackage rec {
     name = "${pname}-${version}";