From 0abe7e75d23e2c460034cf40a73527239444ec9d Mon Sep 17 00:00:00 2001
From: OPNA2608 <opna2608@protonmail.com>
Date: Sun, 28 Jan 2024 21:41:04 +0100
Subject: [PATCH] rmg: Fetch patch for bad GNUInstallDirs variable
 concatenation

Fixes startup
---
 pkgs/by-name/rm/rmg/package.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkgs/by-name/rm/rmg/package.nix b/pkgs/by-name/rm/rmg/package.nix
index 908a5d2fe96d..8c6f22ea1bed 100644
--- a/pkgs/by-name/rm/rmg/package.nix
+++ b/pkgs/by-name/rm/rmg/package.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , boost
 , cmake
 , discord-rpc
@@ -35,6 +36,16 @@ stdenv.mkDerivation rec {
     hash = "sha256-j3OVhcTGUXPC0+AqvAJ7+mc+IFqJeBITU99pvfXIunQ=";
   };
 
+  patches = [
+    # Fix bad concatenation of CMake GNUInstallDirs variables, causing broken asset lookup paths
+    # Remove when version > 0.5.7
+    (fetchpatch {
+      name = "0001-rmg-Fix-GNUInstallDirs-usage.patch";
+      url = "https://github.com/Rosalie241/RMG/commit/685aa597c7ee7ad7cfd4dd782f40d21863b75899.patch";
+      hash = "sha256-HnaxUAX+3Z/VTtYYuhoXOtsDtV61nskgyzEcp8fdBsU=";
+    })
+  ];
+
   nativeBuildInputs = [
     cmake
     nasm