From 2253b8ca7f9f7ae7b313bae16fc8554433234b9d Mon Sep 17 00:00:00 2001
From: Konrad Malik <konrad.malik@gmail.com>
Date: Mon, 3 Jun 2024 17:49:14 +0200
Subject: [PATCH] difftastic: fix build on x86_64-darwin

closes https://github.com/NixOS/nixpkgs/issues/315634
---
 pkgs/tools/text/difftastic/default.nix | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/text/difftastic/default.nix b/pkgs/tools/text/difftastic/default.nix
index c93bfe6442b6197..59b1135a7659ad0 100644
--- a/pkgs/tools/text/difftastic/default.nix
+++ b/pkgs/tools/text/difftastic/default.nix
@@ -1,10 +1,18 @@
 { lib
+, fetchpatch
 , rustPlatform
 , fetchFromGitHub
 , testers
 , difftastic
 }:
 
+let
+  mimallocPatch = fetchpatch {
+    name = "fix-build-on-macos-releases.patch";
+    url = "https://github.com/microsoft/mimalloc/commit/40e0507a5959ee218f308d33aec212c3ebeef3bb.patch";
+    sha256 = "sha256-DK0LqsVXXiEVQSQCxZ5jyZMg0UJJx9a/WxzCroYSHZc=";
+  };
+in
 rustPlatform.buildRustPackage rec {
   pname = "difftastic";
   version = "0.58.0";
@@ -16,13 +24,18 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-PTc8/NhWsLcKJj+9ebV/YaWEmyOWKJCYUjmVbr4z2SY=";
   };
 
-  cargoSha256 = "sha256-wtWJ32bBoCmx+eGkrOk8o0OQFMhGYZEBEDI1oHn3Zuw=";
+  cargoHash = "sha256-wtWJ32bBoCmx+eGkrOk8o0OQFMhGYZEBEDI1oHn3Zuw=";
 
   # skip flaky tests
   checkFlags = [
     "--skip=options::tests::test_detect_display_width"
   ];
 
+  postPatch = ''
+    patch -d $cargoDepsCopy/libmimalloc-sys-0.1.24/c_src/mimalloc \
+      -p1 < ${mimallocPatch}
+  '';
+
   passthru.tests.version = testers.testVersion { package = difftastic; };
 
   meta = with lib; {