diff --git a/flake.nix b/flake.nix
index dc64bdfcf..a4ee80b32 100644
--- a/flake.nix
+++ b/flake.nix
@@ -219,6 +219,7 @@
 
         enableParallelBuilding = true;
 
+        configureFlags = testConfigureFlags; # otherwise configure fails
         dontBuild = true;
         doInstallCheck = true;