cleanup whitespace and commas

* [] is now [ ]
* {} is now { }
* commas in arglists go at end of line not beginning

In short, I ran the whole thing through nixfmt-rfc-style but only
accepted about 30% of its changes. I might grow accustomed to more
of it over time

pkgs/lualinux/default.nix

@@ -21,5 +21,4 @@ in lua.pkgs.buildLuaPackage {
     mkdir -p "$out/lib/lua/${lua.luaversion}"
     cp ${pname}.so "$out/lib/lua/${lua.luaversion}/"
   '';
-
 }