1 files changed, 5 insertions, 0 deletions
diff --git a/pkgs/development/python-modules/sympy/default.nix b/pkgs/development/python-modules/sympy/default.nix
index d2a10492153e0..1954f8bc591f6 100644
--- a/pkgs/development/python-modules/sympy/default.nix
+++ b/pkgs/development/python-modules/sympy/default.nix
@@ -3,6 +3,9 @@
 , fetchPypi
 , glibcLocales
 , mpmath
+
+# Reverse dependency
+, sage
 }:
 
 buildPythonPackage rec {
@@ -27,6 +30,8 @@ buildPythonPackage rec {
     export LANG="en_US.UTF-8"
   '';
 
+  passthru.tests = { inherit sage; };
+
   meta = with lib; {
     description = "A Python library for symbolic mathematics";
     mainProgram = "isympy";