diff --git a/pkgs/development/interpreters/python/setup-hook.sh b/pkgs/development/interpreters/python/setup-hook.sh
index 77ec9e9ac0bf..523df5762fad 100644
--- a/pkgs/development/interpreters/python/setup-hook.sh
+++ b/pkgs/development/interpreters/python/setup-hook.sh
@@ -12,7 +12,9 @@ toPythonPath() {
     echo $result
 }
 
-addEnvHooks "$hostOffset" addPythonPath
+if [ -z "${dontAddPythonPath:-}" ]; then
+    addEnvHooks "$hostOffset" addPythonPath
+fi
 
 # Determinism: The interpreter is patched to write null timestamps when compiling python files.
 # This way python doesn't try to update them when we freeze timestamps in nix store.