1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/sphinx-testing/default.nix b/nixpkgs/pkgs/development/python-modules/sphinx-testing/default.nix
index d29cfdb7a761..0aaad111f73d 100644
--- a/nixpkgs/pkgs/development/python-modules/sphinx-testing/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/sphinx-testing/default.nix
@@ -10,6 +10,7 @@
 buildPythonPackage rec {
   pname = "sphinx-testing";
   version = "1.0.1";
+  format = "setuptools";
 
   src = fetchPypi {
     inherit pname version;