diff --git a/flake.nix b/flake.nix
index ceabc59..39b4bd3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -190,11 +190,9 @@
           nativeBuildInputs = (old.nativeBuildInputs or []) ++ [
             prev.buildPackages.python3  # python3 for opencl_generate_dynamic_loader.py
           ];
-          preConfigure = (old.preConfigure or "") + '''
-            mkdir -p /tmp/jh-python
-            ln -sf ${prev.buildPackages.python3}/bin/python3 /tmp/jh-python/python
-            export PATH=/tmp/jh-python:$PATH
-          '';
+          configureFlags = (old.configureFlags or []) ++ [
+            "ac_cv_prog_PYTHON=${prev.buildPackages.python3}/bin/python3"
+          ];
           propagatedBuildInputs = builtins.filter
             (x: x?pname && x.pname != "perl-ldap")
             (old.propagatedBuildInputs or []);