diff --git a/flake.nix b/flake.nix
index 32ebb4936..a0489ffd6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -430,6 +430,12 @@
           enableParallelBuilding = true;
 
           installFlags = "sysconfdir=$(out)/etc";
+
+          shellHook =
+            ''
+              PATH=$prefix/bin:$PATH
+              unset PYTHONPATH
+            '';
         });
 
   };