diff --git a/pkgs/development/python-modules/darcsver/default.nix b/pkgs/development/python-modules/darcsver/default.nix
new file mode 100644
index 00000000000..753b592a4c5
--- /dev/null
+++ b/pkgs/development/python-modules/darcsver/default.nix
@@ -0,0 +1,29 @@
+{ stdenv, buildPythonPackage, fetchPypi, isPy3k, mock }:
+
+buildPythonPackage rec {
+  pname = "darcsver";
+  version = "1.7.4";
+
+  disabled = isPy3k;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1yb1c3jxqvy4r3qiwvnb86qi5plw6018h15r3yk5ji3nk54qdcb6";
+  };
+
+  buildInputs = [ mock ];
+
+  # Note: We don't actually need to provide Darcs as a build input.
+  # Darcsver will DTRT when Darcs isn't available.  See news.gmane.org
+  # http://thread.gmane.org/gmane.comp.file-systems.tahoe.devel/3200 for a
+  # discussion.
+
+  # AttributeError: 'module' object has no attribute 'test_darcsver'
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    description = "Darcsver, generate a version number from Darcs history";
+    homepage = https://pypi.python.org/pypi/darcsver;
+    license = "BSD-style";
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ca1484e7abf..1923fe8a9c1 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1999,33 +1999,7 @@ in {
 
   cssutils = callPackage ../development/python-modules/cssutils { };
 
-  darcsver = buildPythonPackage (rec {
-    name = "darcsver-1.7.4";
-    disabled = isPy3k;
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/d/darcsver/${name}.tar.gz";
-      sha256 = "1yb1c3jxqvy4r3qiwvnb86qi5plw6018h15r3yk5ji3nk54qdcb6";
-    };
-
-    buildInputs = with self; [ self.mock ];
-
-    # Note: We don't actually need to provide Darcs as a build input.
-    # Darcsver will DTRT when Darcs isn't available.  See news.gmane.org
-    # http://thread.gmane.org/gmane.comp.file-systems.tahoe.devel/3200 for a
-    # discussion.
-
-    # AttributeError: 'module' object has no attribute 'test_darcsver'
-    doCheck = false;
-
-    meta = {
-      description = "Darcsver, generate a version number from Darcs history";
-
-      homepage = https://pypi.python.org/pypi/darcsver;
-
-      license = "BSD-style";
-    };
-  });
+  darcsver = callPackage ../development/python-modules/darcsver { };
 
   dask = callPackage ../development/python-modules/dask { };