further improvements to buildLuaPackage

pkgs/top-level/lua-packages.nix

@@ -5,15 +5,19 @@
    for each package in a separate file: the call to the function would
    be almost as must code as the function itself. */
 
-{fetchurl, stdenv, lua}:
+{ fetchurl, stdenv, lua, callPackage }:
 
-let self = _self; _self = with self; {
+let
+ isLua51 = lua.luaversion == "5.1";
+ isLua52 = lua.luaversion == "5.2";
+ self = _self;
+ _self = with self; {
   inherit (stdenv.lib) maintainers;
 
   #define build lua package function
-  buildLuaPackage = import ../development/lua-modules/generic lua;
+  buildLuaPackage = callPackage ../development/lua-modules/generic lua;
 
-  fileSystem = buildLuaPackage {
+  filesystem = buildLuaPackage {
     name = "filesystem-1.6.2";
     src = fetchurl {
       url = "https://github.com/keplerproject/luafilesystem/archive/v1_6_2.tar.gz";
@@ -33,7 +37,7 @@ let self = _self; _self = with self; {
         url = "http://files.luaforge.net/releases/luasocket/luasocket/luasocket-${version}/luasocket-${version}.tar.gz";
         sha256 = "19ichkbc4rxv00ggz8gyf29jibvc2wq9pqjik0ll326rrxswgnag";
     };
-    disabled = lua.luaversion != "5.1";
+    disabled = isLua52;
     patchPhase = ''
         sed -e "s,^INSTALL_TOP_SHARE.*,INSTALL_TOP_SHARE=$out/share/lua/${lua.luaversion}," \
             -e "s,^INSTALL_TOP_LIB.*,INSTALL_TOP_LIB=$out/lib/lua/${lua.luaversion}," \