1 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/development/python-modules/flask-principal/default.nix b/pkgs/development/python-modules/flask-principal/default.nix
index 1f41f798763..cbdbd989211 100644
--- a/pkgs/development/python-modules/flask-principal/default.nix
+++ b/pkgs/development/python-modules/flask-principal/default.nix
@@ -1,11 +1,11 @@
-{ lib, buildPythonPackage, fetchurl, flask, blinker, nose }:
+{ lib, buildPythonPackage, fetchPypi, flask, blinker, nose }:
 
 buildPythonPackage rec {
-  name = "Flask-Principal-${version}";
+  pname = "Flask-Principal";
   version = "0.4.0";
 
-  src = fetchurl {
-    url = "mirror://pypi/F/Flask-Principal/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "0lwlr5smz8vfm5h9a9i7da3q1c24xqc6vm9jdywdpgxfbi5i7mpm";
   };