From 68fc06fa64e318c82b73d18ed363c6d820756254 Mon Sep 17 00:00:00 2001
From: Grimmauld <Grimmauld@grimmauld.de>
Date: Wed, 26 Mar 2025 10:24:10 +0100
Subject: [PATCH] sdl2-compat: symlink package config specification file into
 sdl2.pc

Previously, replacing SDL2 with sdl2-compat with dependents on the SDL2 pkgconfig file would just break.
An example for this breakage is pkgs.ffmpeg.override { SDL2 = pkgs.sdl2-compat; }.
This is fixed by symlinking the missing sdl2.pc file to point to sdl2_compat.pc.

This is analogous to #388304 (aa8bb53991267915eb10b5dedf566712e56699d0)
---
 pkgs/by-name/sd/sdl2-compat/package.nix | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pkgs/by-name/sd/sdl2-compat/package.nix b/pkgs/by-name/sd/sdl2-compat/package.nix
index 396e7ea8919e..0b28b9200e9e 100644
--- a/pkgs/by-name/sd/sdl2-compat/package.nix
+++ b/pkgs/by-name/sd/sdl2-compat/package.nix
@@ -40,9 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
     libX11
   ];
 
-  checkInputs = [
-    libGL
-  ];
+  checkInputs = [ libGL ];
 
   outputs = [
     "out"
@@ -67,6 +65,12 @@ stdenv.mkDerivation (finalAttrs: {
   patches = [ ./find-headers.patch ];
   setupHook = ./setup-hook.sh;
 
+  postFixup = ''
+    # allow as a drop in replacement for SDL2
+    # Can be removed after treewide switch from pkg-config to pkgconf
+    ln -s $dev/lib/pkgconfig/sdl2_compat.pc $dev/lib/pkgconfig/sdl2.pc
+  '';
+
   passthru = {
     tests =
       let