From 2536713f70c6832498efbd7736604b01e0a57d18 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Thu, 25 Jul 2024 21:20:32 -0400
Subject: [PATCH] rubyPackages.iconv: fix build on Darwin
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Darwin’s libiconv has separate outputs for the dylib and headers, so it needs to use `lib.getLib` and `lib.getDev`.
---
 pkgs/development/ruby-modules/gem-config/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 693907a6b2d9..0fa77f9ced6c 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -467,7 +467,10 @@ in
 
   iconv = attrs: {
     dontBuild = false;
-    buildFlags = lib.optional stdenv.isDarwin "--with-iconv-dir=${libiconv}";
+    buildFlags = lib.optionals stdenv.isDarwin [
+      "--with-iconv-dir=${lib.getLib libiconv}"
+      "--with-iconv-include=${lib.getDev libiconv}/include"
+    ];
     patches = [
       # Fix incompatible function pointer conversion errors with clang 16
       ./iconv-fix-incompatible-function-pointer-conversions.patch