diff --git a/pkgs/by-name/ca/caligula/package.nix b/pkgs/by-name/ca/caligula/package.nix
index b423fa01beca..da88e59572f1 100644
--- a/pkgs/by-name/ca/caligula/package.nix
+++ b/pkgs/by-name/ca/caligula/package.nix
@@ -19,10 +19,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ma7JVbWSiKfkCXCDwA8DFm2+KPrWR+8nSdgGSqehNg8=";
 
-  env = {
-     LIBCLANG_PATH = "${lib.getLib llvmPackages.libclang}/lib";
-   };
-
+  nativeBuildInputs = [
+    rustPlatform.bindgenHook
+  ];
 
   buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [