python312Packages.quil: fix build on Darwin

Adds `libiconv` to build path (fixes linker error)

pkgs/development/python-modules/quil/default.nix

@@ -1,5 +1,6 @@
 {
   lib,
+  stdenv,
   buildPythonPackage,
   pythonOlder,
   fetchFromGitHub,
@@ -7,6 +8,7 @@
   numpy,
   pytestCheckHook,
   syrupy,
+  libiconv
 }:
 
 buildPythonPackage rec {
@@ -40,6 +42,8 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
+  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+
   dependencies = [ numpy ];
 
   pythonImportsCheck = [ "numpy" ];