From e3b17a152b82fddbb95b0ec232f034dc48723b52 Mon Sep 17 00:00:00 2001
From: Kirill Radzikhovskyy <kirillrdy@gmail.com>
Date: Fri, 16 Jan 2026 20:55:42 +1100
Subject: [PATCH] rubyPackages.iconv: fix build with gcc15

---
 pkgs/development/ruby-modules/gem-config/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index ac64bfdc0474..298f2ff64674 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -661,6 +661,7 @@ in
       "--with-iconv-dir=${lib.getLib libiconv}"
       "--with-iconv-include=${lib.getDev libiconv}/include"
     ];
+    env.NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
   };
 
   idn-ruby = attrs: {