diff --git a/pkgs/applications/science/electronics/sv-lang/default.nix b/pkgs/applications/science/electronics/sv-lang/default.nix
index 928cf3059385..2bc5059b8b80 100644
--- a/pkgs/applications/science/electronics/sv-lang/default.nix
+++ b/pkgs/applications/science/electronics/sv-lang/default.nix
@@ -49,15 +49,14 @@ stdenv.mkDerivation rec {
     cmake
     python3
     ninja
-
-    # though only used in tests, cmake will complain its absence when configuring
-    catch2_3
   ];
 
   buildInputs = [
     unordered_dense
     boost182
     fmt_9
+    # though only used in tests, cmake will complain its absence when configuring
+    catch2_3
   ];
 
   # TODO: a mysterious linker error occurs when building the unittests on darwin.