From 3f258b8e445577ad47b566bceeb40c1a89d98b05 Mon Sep 17 00:00:00 2001
From: K900 <me@0upti.me>
Date: Thu, 25 Jan 2024 13:58:23 +0300
Subject: [PATCH] catch2_3: fix build on i686

---
 pkgs/development/libraries/catch2/3.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/libraries/catch2/3.nix b/pkgs/development/libraries/catch2/3.nix
index 6bf982aa75fb..dff36cbc3d3a 100644
--- a/pkgs/development/libraries/catch2/3.nix
+++ b/pkgs/development/libraries/catch2/3.nix
@@ -29,6 +29,11 @@ stdenv.mkDerivation rec {
     "-DCMAKE_CTEST_ARGUMENTS=-E;ApprovalTests"
   ];
 
+  # Tests fail on x86_32 if compiled with x87 floats: https://github.com/catchorg/Catch2/issues/2796
+  env = lib.optionalAttrs stdenv.isx86_32 {
+    NIX_CFLAGS_COMPILE = "-msse2 -mfpmath=sse";
+  };
+
   doCheck = true;
 
   nativeCheckInputs = [