diff --git a/pkgs/development/python-modules/pure-eval/default.nix b/pkgs/development/python-modules/pure-eval/default.nix
index d7e92f09784..2807611f493 100644
--- a/pkgs/development/python-modules/pure-eval/default.nix
+++ b/pkgs/development/python-modules/pure-eval/default.nix
@@ -1,9 +1,11 @@
-{ lib, buildPythonPackage, fetchFromGitHub, setuptools_scm, toml, pytest }:
+{ buildPythonPackage, isPy3k, lib, fetchFromGitHub, setuptools_scm, toml, pytest }:
 
 buildPythonPackage rec {
   pname = "pure_eval";
   version = "0.1.0";
 
+  disabled = !isPy3k;
+
   src = fetchFromGitHub {
     owner = "alexmojaki";
     repo = pname;