From 09d46de75258066915de1c377b0d5b6f6e773494 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 3 Feb 2023 00:53:05 +0100
Subject: [PATCH] py-spy: fix build on darwin

---
 pkgs/development/tools/py-spy/default.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/tools/py-spy/default.nix b/pkgs/development/tools/py-spy/default.nix
index e9bcb2efae95..cc6212a5242e 100644
--- a/pkgs/development/tools/py-spy/default.nix
+++ b/pkgs/development/tools/py-spy/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, pkgsBuildBuild, rustPlatform, fetchFromGitHub, pkg-config, libunwind, python3 }:
+{ lib, stdenv, pkgsBuildBuild, rustPlatform, fetchFromGitHub, pkg-config, libunwind, python3, runCommand, darwin }:
 
 rustPlatform.buildRustPackage rec {
   pname = "py-spy";
@@ -11,6 +11,15 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-NciyzKiDKIMeuHhTjzmHIc3dYW4AniuCNjZugm4hMss=";
   };
 
+  nativeBuildInputs = [ rustPlatform.bindgenHook ];
+
+  buildInputs = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    # Pull a header that contains a definition of proc_pid_rusage().
+    (runCommand "${pname}_headers" { } ''
+      install -Dm444 ${lib.getDev darwin.apple_sdk.sdk}/include/libproc.h $out/include/libproc.h
+    '')
+  ];
+
   NIX_CFLAGS_COMPILE = "-L${libunwind}/lib";
 
   # error: linker `arm-linux-gnueabihf-gcc` not found