diff --git a/pkgs/development/python-modules/slob/default.nix b/pkgs/development/python-modules/slob/default.nix
new file mode 100644
index 00000000000..490113d6952
--- /dev/null
+++ b/pkgs/development/python-modules/slob/default.nix
@@ -0,0 +1,34 @@
+{ stdenv
+, buildPythonPackage
+, fetchFromGitHub
+, isPy3k
+, PyICU
+, python
+}:
+
+buildPythonPackage rec {
+  name = "slob";
+  verison = "unstable-2016-11-03";
+  disabled = !isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "itkach";
+    repo = "slob";
+    rev = "d1ed71e4778729ecdfc2fe27ed783689a220a6cd";
+    sha256 = "1r510s4r124s121wwdm9qgap6zivlqqxrhxljz8nx0kv0cdyypi5";
+  };
+
+  propagatedBuildInputs = [ PyICU ];
+
+  checkPhase = ''
+    ${python.interpreter} -m unittest slob
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/itkach/slob/;
+    description = "Reference implementation of the slob (sorted list of blobs) format";
+    license = licenses.gpl3;
+    maintainers = [ maintainers.rycee ];
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 63786c6a8d7..0529426c47e 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3730,30 +3730,7 @@ in {
 
   slimit = callPackage ../development/python-modules/slimit { };
 
-  slob = buildPythonPackage rec {
-    name = "slob-unstable-2016-11-03";
-
-    disabled = !isPy3k;
-
-    src = pkgs.fetchFromGitHub {
-      owner = "itkach";
-      repo = "slob";
-      rev = "d1ed71e4778729ecdfc2fe27ed783689a220a6cd";
-      sha256 = "1r510s4r124s121wwdm9qgap6zivlqqxrhxljz8nx0kv0cdyypi5";
-    };
-
-    propagatedBuildInputs = [ self.PyICU ];
-
-    checkPhase = "python3 -m unittest slob";
-
-    meta = {
-      homepage = https://github.com/itkach/slob/;
-      description = "Reference implementation of the slob (sorted list of blobs) format";
-      license = licenses.gpl3;
-      platforms = platforms.all;
-      maintainers = [ maintainers.rycee ];
-    };
-  };
+  slob = callPackage ../development/python-modules/slob { };
 
   slowaes = buildPythonPackage rec {
     name = "slowaes-${version}";