diff --git a/pkgs/development/python-modules/flask-principal/default.nix b/pkgs/development/python-modules/flask-principal/default.nix
new file mode 100644
index 00000000000..1f41f798763
--- /dev/null
+++ b/pkgs/development/python-modules/flask-principal/default.nix
@@ -0,0 +1,22 @@
+{ lib, buildPythonPackage, fetchurl, flask, blinker, nose }:
+
+buildPythonPackage rec {
+  name = "Flask-Principal-${version}";
+  version = "0.4.0";
+
+  src = fetchurl {
+    url = "mirror://pypi/F/Flask-Principal/${name}.tar.gz";
+    sha256 = "0lwlr5smz8vfm5h9a9i7da3q1c24xqc6vm9jdywdpgxfbi5i7mpm";
+  };
+
+  propagatedBuildInputs = [ flask blinker ];
+
+  checkInputs = [ nose ];
+
+  meta = with lib; {
+    homepage = http://packages.python.org/Flask-Principal/;
+    description = "Identity management for flask";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 42947232829..453828b7ec0 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7677,25 +7677,7 @@ in {
 
   flask_oauthlib = callPackage ../development/python-modules/flask-oauthlib { };
 
-  flask_principal = buildPythonPackage rec {
-    name = "Flask-Principal-${version}";
-    version = "0.4.0";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/F/Flask-Principal/${name}.tar.gz";
-      sha256 = "0lwlr5smz8vfm5h9a9i7da3q1c24xqc6vm9jdywdpgxfbi5i7mpm";
-    };
-
-    propagatedBuildInputs = with self; [ flask blinker nose ];
-
-    meta = {
-      homepage = "http://packages.python.org/Flask-Principal/";
-      description = "Identity management for flask";
-      license = licenses.bsd2;
-      platforms = platforms.all;
-      maintainers = with maintainers; [ abbradar ];
-    };
-  };
+  flask_principal = callPackage ../development/python-modules/flask-principal { };
 
   flask-pymongo = callPackage ../development/python-modules/Flask-PyMongo { };