First, Lua is not spelled in all caps, because it is a Portuguese word. That would be like spelling PYTHON in all caps.
Second, Lua is the faster than any interpreted "scripting" language I know of. And if you use LuaJIT, performance can even approach that of compiled languages such as C.
And third, a completely Lua OS is a long-term goal. As I understand it, the main focus of the project at this point is the creation of Safe Lua, then to slowly replace Linux-based userland parts with Lua-based parts.
Second, Lua is the faster than any interpreted "scripting" language I know of. And if you use LuaJIT, performance can even approach that of compiled languages such as C.
And third, a completely Lua OS is a long-term goal. As I understand it, the main focus of the project at this point is the creation of Safe Lua, then to slowly replace Linux-based userland parts with Lua-based parts.