From ea1e427c00753483fd5583140c8960b80bccc69b Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Sun, 5 May 2019 14:08:05 +1000
Subject: fix: don't try to look in home_tree if not available

---
 src/luarocks/cmd.lua | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/luarocks/cmd.lua b/src/luarocks/cmd.lua
index 61e44a6e..b2f036bf 100644
--- a/src/luarocks/cmd.lua
+++ b/src/luarocks/cmd.lua
@@ -156,10 +156,11 @@ local function get_lua_version(flags)
    if flags["lua-version"] then
       return flags["lua-version"] 
    end
-   local dirs = {
-      dir.path(cfg.home_tree, ".luarocks"),
-      cfg.sysconfdir,
-   }
+   local dirs = {}
+   if cfg.home_tree then
+      dirs[1] = dir.path(cfg.home_tree, ".luarocks")
+   end
+   table.insert(dirs, cfg.sysconfdir)
    if flags["project-tree"] then
       table.insert(dirs, 1, dir.path(flags["project-tree"], "..", ".luarocks"))
    end
-- 
cgit v1.2.3-55-g6feb