From e4661579e6c61cfd6984f5f27a69e2463ba495fb Mon Sep 17 00:00:00 2001
From: OPNA2608 <opna2608@protonmail.com>
Date: Tue, 2 Sep 2025 11:32:43 +0200
Subject: [PATCH] klystrack: Fix FTBFS

---
 pkgs/by-name/kl/klystrack/package.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/by-name/kl/klystrack/package.nix b/pkgs/by-name/kl/klystrack/package.nix
index 3b6f7c6674ad..f2d7e84479e5 100644
--- a/pkgs/by-name/kl/klystrack/package.nix
+++ b/pkgs/by-name/kl/klystrack/package.nix
@@ -20,6 +20,12 @@ stdenv.mkDerivation rec {
     sha256 = "1h99sm2ddaq483hhk2s3z4bjbgn0d2h7qna7l7qq98wvhqix8iyz";
   };
 
+  # https://github.com/kometbomb/klystrack/commit/6dac9eb5e75801ce4dec1d8b339f78e3df2f54bc fixes build but doesn't apply as-is, just patch in the flag
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace-fail '-DUSESDL_IMAGE' '-DUSESDL_IMAGE -DUSESDL_RWOPS'
+  '';
+
   buildInputs = [
     SDL2
     SDL2_image