guix/gnu/packages/patches/retroarch-LIBRETRO_DIRECTORY.patch

From f308dc91660954ab88bb41868c0b9809592923e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=8B=E6=96=87=E6=AD=A6?= <iyzsong@member.fsf.org>
Date: Sat, 20 Feb 2021 20:37:39 +0800
Subject: [PATCH] Allow set libretro_directory via environment variable

---
 retroarch.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/retroarch.c b/retroarch.c
index 6a88c3108e..6807c12b5b 100644
--- a/retroarch.c
+++ b/retroarch.c
@@ -36038,6 +36038,15 @@ static void retroarch_parse_input_and_config(
 #endif
       config_load(&p_rarch->g_extern);
 
+   /* Override settings via environment variables */
+   if (getenv("LIBRETRO_DIRECTORY")) {
+      settings_t *settings = p_rarch->configuration_settings;
+      retroarch_override_setting_set(RARCH_OVERRIDE_SETTING_LIBRETRO_DIRECTORY, NULL);
+      configuration_set_string(settings,
+            settings->paths.directory_libretro,
+            getenv("LIBRETRO_DIRECTORY"));
+   }
+
    /* Second pass: All other arguments override the config file */
    optind = 1;
 
-- 
2.30.0