diff --git a/pkgs/development/python-modules/obfsproxy/default.nix b/pkgs/development/python-modules/obfsproxy/default.nix
new file mode 100644
index 000000000000..2f435201d21d
--- /dev/null
+++ b/pkgs/development/python-modules/obfsproxy/default.nix
@@ -0,0 +1,38 @@
+{ stdenv
+, buildPythonPackage
+, fetchgit
+, pyptlib
+, argparse
+, twisted
+, pycrypto
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "obfsproxy";
+  version = "0.2.13";
+
+  src = fetchgit {
+    url = meta.repositories.git;
+    rev = "refs/tags/${pname}-${version}";
+    sha256 = "04ja1cl8xzqnwrd2gi6nlnxbmjri141bzwa5gybvr44d8h3k2nfa";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py --replace "version=versioneer.get_version()" "version='${version}'"
+    substituteInPlace setup.py --replace "argparse" ""
+  '';
+
+  propagatedBuildInputs = [ pyptlib argparse twisted pycrypto pyyaml ];
+
+  # No tests in archive
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    description = "A pluggable transport proxy";
+    homepage = https://www.torproject.org/projects/obfsproxy;
+    repositories.git = https://git.torproject.org/pluggable-transports/obfsproxy.git;
+    maintainers = with maintainers; [ phreedom thoughtpolice ];
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ca88619251ec..ea89c5030ca7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2984,34 +2984,7 @@ in {
 
   oauthlib = callPackage ../development/python-modules/oauthlib { };
 
-  obfsproxy = buildPythonPackage ( rec {
-    name = "obfsproxy-${version}";
-    version = "0.2.13";
-
-    src = pkgs.fetchgit {
-      url = meta.repositories.git;
-      rev = "refs/tags/${name}";
-      sha256 = "04ja1cl8xzqnwrd2gi6nlnxbmjri141bzwa5gybvr44d8h3k2nfa";
-    };
-
-    postPatch = ''
-      substituteInPlace setup.py --replace "version=versioneer.get_version()" "version='${version}'"
-      substituteInPlace setup.py --replace "argparse" ""
-    '';
-
-    propagatedBuildInputs = with self;
-      [ pyptlib argparse twisted pycrypto pyyaml ];
-
-    # No tests in archive
-    doCheck = false;
-
-    meta = {
-      description = "A pluggable transport proxy";
-      homepage = https://www.torproject.org/projects/obfsproxy;
-      repositories.git = https://git.torproject.org/pluggable-transports/obfsproxy.git;
-      maintainers = with maintainers; [ phreedom thoughtpolice ];
-    };
-  });
+  obfsproxy = callPackage ../development/python-modules/obfsproxy { };
 
   objgraph = buildPythonPackage rec {
     name = "objgraph-${version}";