From b8b05a9010da29518fd5c1ae9edcb76e833a21a1 Mon Sep 17 00:00:00 2001
From: Markus Kowalewski <markus.kowalewski@gmail.com>
Date: Fri, 23 Jan 2026 14:38:03 +0100
Subject: [PATCH] apbs: fix build

---
 pkgs/by-name/ap/apbs/package.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/by-name/ap/apbs/package.nix b/pkgs/by-name/ap/apbs/package.nix
index 19137459d854..4a7a06f18292 100644
--- a/pkgs/by-name/ap/apbs/package.nix
+++ b/pkgs/by-name/ap/apbs/package.nix
@@ -27,6 +27,9 @@ let
       cmake
     ];
 
+    # Required for gcc-15 compatibility
+    env.NIX_CFLAGS_COMPILE = "-std=gnu17";
+
     cmakeFlags = [
       "-DBLAS_LIBRARIES=${blas}/lib"
       "-DBLA_STATIC=OFF"