curl: set structuredAttrs

(cherry picked from commit 160ca6558e)
(cherry picked from commit 9ea380a822df127898e92ebe6c5af1b8c8cff4e0)

pkgs/by-name/cu/curlMinimal/package.nix

@@ -115,6 +115,7 @@ stdenv.mkDerivation (finalAttrs: {
   enableParallelBuilding = true;
 
   strictDeps = true;
+  __structuredAttrs = true;
 
   env = {
     CXX = "${stdenv.cc.targetPrefix}c++";