fix the apple-sdk on x86_64-darwin

Author: angerman

flake.nix

@@ -55,6 +55,13 @@
              doCheck = false;
            });
          });
+         darwin = (final: prev: prev.lib.optionalAttrs (prev.stdenv.hostPlatform.isDarwin) {
+          # error: use of undeclared identifier 'IP_RECVTOS'
+          # for whatever reason nixpkgs 24.11 defines x86_64-darwin
+          # to be sdk-10.12.2, and aarch64-darwin to be sdk-11.
+          # nixpkgs 25.05 will drop sdk-10.12, and unify aarch64 and x86 at last.
+          apple-sdk = prev.apple-sdk_11;
+         });
        };
        supportedSystems = [
             "x86_64-linux"