Let's try harder to fail if CWD does not exist.

2 files changed, 8 insertions, 3 deletions

diff --git a/src/luarocks/command_line.lua b/src/luarocks/command_line.lua
index 9cc34c42..4ff22c6e 100644
--- a/src/luarocks/command_line.lua
+++ b/src/luarocks/command_line.lua
@@ -192,8 +192,8 @@ function command_line.run_command(...)
          cfg.variables[k] = v
       end
    end
-   
-   if not fs.exists(".") then
+
+   if not fs.current_dir() then
       die("Current directory does not exist. Please run LuaRocks from an existing directory.")
    end
    
diff --git a/src/luarocks/fs/lua.lua b/src/luarocks/fs/lua.lua
index b3d3f6f1..c3f92bda 100644
--- a/src/luarocks/fs/lua.lua
+++ b/src/luarocks/fs/lua.lua
@@ -207,8 +207,13 @@ end
 -- Allows leaving a directory (e.g. for deleting it) in
 -- a crossplatform way.
 function fs_lua.change_dir_to_root()
-   table.insert(dir_stack, lfs.currentdir())
+   local current = lfs.currentdir()
+   if not current then
+      return false
+   end
+   table.insert(dir_stack, current)
    lfs.chdir("/") -- works on Windows too
+   return true
 end
 
 --- Change working directory to the previous in the dir stack.