diff --git a/pkgs/development/tools/py-spy/default.nix b/pkgs/development/tools/py-spy/default.nix
index 5da3ca43a721..eb3d10016157 100644
--- a/pkgs/development/tools/py-spy/default.nix
+++ b/pkgs/development/tools/py-spy/default.nix
@@ -1,6 +1,5 @@
 { lib
 , stdenv
-, darwin
 , fetchFromGitHub
 , libunwind
 , python3
@@ -30,11 +29,6 @@ rustPlatform.buildRustPackage rec {
     python3
   ];
 
-  buildInputs = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
-    # Pull a header that contains a definition of proc_pid_rusage().
-    darwin.apple_sdk_11_0.Libsystem
-  ];
-
   env.NIX_CFLAGS_COMPILE = "-L${libunwind}/lib";
 
   checkFlags = [