LuaRocks 2.0.7.1

Removed caveats, since they applied to a now-old upgrade of the
formula.

Formula/luarocks.rb

@@ -3,9 +3,9 @@ require 'formula'
 def use_luajit?; ARGV.include? '--with-luajit'; end
 
 class Luarocks < Formula
-  url 'http://luarocks.org/releases/luarocks-2.0.4.1.tar.gz'
   homepage 'http://luarocks.org'
-  md5 '2c7caccce3cdf236e6f9aca7bec9bdea'
+  url 'http://luarocks.org/releases/luarocks-2.0.7.1.tar.gz'
+  md5 '37003e5c78792e353acde684426bdeac'
 
   depends_on use_luajit? ? 'luajit' : 'lua'
 
@@ -32,16 +32,10 @@ class Luarocks < Formula
 
     system "./configure", *args
     system "make"
+    ENV.j1 # 2.0.4.1 worked in parallel but 2.0.7.1 does not
     system "make install"
   end
 
-  def caveats; <<-EOS.undent
-    Luarocks now "just works" but this means any rocks you installed previously
-    will need to be moved from `lib/luarocks/lib/luarocks` to `lib/luarocks`.
-    You'll probably have a better time of it all if you just reinstall them.
-    EOS
-  end
-
   def test
     opoo "Luarocks test script installs 'lpeg'"
     system "#{bin}/luarocks install lpeg"
@@ -50,7 +44,7 @@ class Luarocks < Formula
 end
 
 
-# this patch because we set the permissions of /usr/local to root owned
+# This patch because we set the permissions of /usr/local to root owned
 # not user writable to be "good" citizens of /usr/local. Actually LUA is being
 # pedantic since all the directories it wants under /usr/local are writable
 # so we just return true. Naughty, but I don't know LUA and don't want to
@@ -65,7 +59,7 @@ index 3a547fe..ca4ddc5 100644
  -- plus an error message.
  function check_command_permissions(flags)
 -   local root_dir = path.root_dir(cfg.rocks_dir)
--   if not flags["local"] and not fs.is_writable(root_dir) then
+-   if not flags["local"] and not (fs.is_writable(root_dir) or fs.is_writable(dir.dir_name(root_dir))) then
 -      return nil, "Your user does not have write permissions in " .. root_dir ..
 -                  " \n-- you may want to run as a privileged user or use your local tree with --local."
 -   end