manif: use temp dir if local cache can't be created

1 files changed, 6 insertions, 1 deletions

diff --git a/src/luarocks/manif.lua b/src/luarocks/manif.lua
index 9026bc5b..45130696 100644
--- a/src/luarocks/manif.lua
+++ b/src/luarocks/manif.lua
@@ -72,7 +72,12 @@ local function fetch_manifest_from(repo_url, filename)
    local cache_dir = dir.path(cfg.local_cache, name)
    local ok = fs.make_dir(cache_dir)
    if not ok then
-      return nil, "Failed creating temporary cache directory "..cache_dir
+      cfg.local_cache = fs.make_temp_dir("local_cache")
+      cache_dir = dir.path(cfg.local_cache, name)
+      ok = fs.make_dir(cache_dir)
+      if not ok then
+         return nil, "Failed creating temporary cache directory "..cache_dir
+      end
    end
    local file, err, errcode, from_cache = fetch.fetch_url(url, dir.path(cache_dir, filename), true)
    if not file then