1 files changed, 37 insertions, 0 deletions
diff --git a/src/config.c b/src/config.c
index cbbbbe2..100c3c6 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1,6 +1,9 @@
 #include "config.h"
 #include "log.h"
+#include "paths.h"
 
+#include "unistd.h"
+#include "lua.h"
 #include "lauxlib.h"
 #include "lualib.h"
 #include "stdlib.h"
@@ -126,8 +129,42 @@ int pow_open_config(lua_State *L_global, pow_config *cfg, char *path) {
     }
 
     cfg->build_cfg_ref = luaL_ref(L, LUA_REGISTRYINDEX);
+
+    lua_pop(L, 1);
+  }
+
+  if (access("/etc/pow/use.lua", F_OK) != 0) {
+    pow_log_info("use.lua does not exist");
+
+    return 0;
+  }
+
+  lua_State *L_use = lua_newthread(L_global);
+
+  err = luaL_loadfile(L_use, "/etc/pow/use.lua");
+
+  if (err) {
+    pow_log_error("failed to load use.lua");
+
+    return 0;
+  }
+
+  err = lua_pcall(L_use, 0, 1, 0);
+
+  if (err) {
+    pow_log_error("failed to execute use.lua");
+
+    return 0;
   }
 
+  if (!lua_istable(L_use, -1)) {
+    pow_log_error("invalid return value of use.lua");
+
+    return 0;
+  }
+
+  cfg->use_ref = luaL_ref(L_use, LUA_REGISTRYINDEX);
+
   return 0;
 }