fix(macos): try fixing libpoco build

Author: arntanguy

flake.nix

@@ -78,6 +78,15 @@
               # overrideAttrs.your-repository = {
               #   src = inputs.your-repository;
               # };
+              overrideAttrs.poco =
+                { drc-prev, pkgs-final, ... }:
+                {
+                  buildInputs = (drc-prev.buildInputs or [ ]) ++ [ pkgs-final.zlib ];
+
+                  cmakeFlags = (drc-prev.cmakeFlags or [ ]) ++ [
+                    "-DPOCO_UNBUNDLED=ON"
+                  ];
+                };
               packages = {
                 panda-controller-example =
                   {