Freecad & Blender ccache

machines/universedesktop/programs/cad.nix

@@ -51,6 +51,7 @@ in {
   # if you also want support for flakes 
   nixpkgs.overlays = [(self: super: rec {
     freecad = super.freecad.override {
+      stdenv = super.ccacheStdenv;
       python = py3Cad;
     };
   })];