spade: enable build on darwin (#335520)

pkgs/by-name/sp/spade/package.nix

@@ -1,10 +1,12 @@
-{ lib
-, rustPlatform
-, fetchFromGitLab
-, stdenv
-, nix-update
-, writeScript
-, git
+{
+  lib,
+  rustPlatform,
+  fetchFromGitLab,
+  stdenv,
+  nix-update,
+  writeScript,
+  git,
+  python312,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -39,14 +41,20 @@ rustPlatform.buildRustPackage rec {
     '')
   ];
 
+  buildInputs = lib.optionals stdenv.isDarwin [ python312 ];
+  env.NIX_CFLAGS_LINK = lib.optionals stdenv.isDarwin "-L${python312}/lib/python3.12/config-3.12-darwin -lpython3.12";
+
   meta = with lib; {
     description = "Better hardware description language";
     homepage = "https://gitlab.com/spade-lang/spade";
     changelog = "https://gitlab.com/spade-lang/spade/-/blob/${src.rev}/CHANGELOG.md";
     # compiler is eupl12, spade-lang stdlib is both asl20 and mit
-    license = with licenses; [ eupl12 asl20 mit ];
+    license = with licenses; [
+      eupl12
+      asl20
+      mit
+    ];
     maintainers = with maintainers; [ pbsds ];
     mainProgram = "spade";
-    broken = stdenv.isDarwin; # ld: symbol(s) not found for architecture ${system}
   };
 }