1 files changed, 9 insertions, 1 deletions

diff --git a/src/luarocks/path.lua b/src/luarocks/path.lua
index 64a203ef..2ce0e078 100644
--- a/src/luarocks/path.lua
+++ b/src/luarocks/path.lua
@@ -37,11 +37,19 @@ end
 
 function root_dir(rocks_dir)
    assert(type(rocks_dir) == "string")
-   
    local suffix = dir.path("lib", "luarocks")
    return rocks_dir:match("(.*)" .. suffix .. ".*$")
 end
 
+function rocks_tree_to_string(tree)
+   if type(tree) == "string" then
+      return tree
+   else
+      assert(type(tree) == "table")
+      return tree.root
+   end
+end
+
 function deploy_bin_dir(tree)
    if type(tree) == "string" then
       return dir.path(tree, "bin")