diff --git a/flake.nix b/flake.nix
index b28c6c1..8552740 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,11 +20,73 @@
             (builtins.match ''.*set\(.LSYNCD_VERSION ([0-9\.]*).*''
               (builtins.substring 0 500
                 (builtins.readFile ./CMakeLists.txt))) 0;
-          buildTypes = { 
-            lua5_1 = [pkgs.lua5_1 pkgs.lua51Packages.luaposix pkgs.lua51Packages.penlight];
-            lua5_2 = [pkgs.lua5_2 pkgs.lua52Packages.luaposix pkgs.lua52Packages.penlight];
-            lua5_3 = [pkgs.lua5_3 pkgs.lua53Packages.luaposix pkgs.lua53Packages.penlight];
-            lua5_4 = [pkgs.lua5_4 pkgs.lua54Packages.luaposix pkgs.lua54Packages.penlight];
+
+
+
+          buildExtensions = luapkgs: (
+            let
+              nucleo = luapkgs.buildLuarocksPackage {
+                pname = "lua-nucleo";
+                version = "1.1.0-1";
+                knownRockspec = (pkgs.fetchurl {
+                  url    = "https://luarocks.org/lua-nucleo-1.1.0-1.rockspec";
+                  sha256 = "02ly51wav1pxiahf6lflr4vks550bisdq4ir9cy1lxn9v2zmcbim";
+                }).outPath;
+                src = pkgs.fetchgit ( removeAttrs (builtins.fromJSON ''{
+                "url": "https://github.com/lua-nucleo/lua-nucleo.git",
+                "rev": "76835968ff30f182367abd58637560402990e0b1",
+                "date": "2021-04-26T11:51:34+03:00",
+                "path": "/nix/store/3ycmrh0j64qxm4f04yxmn3y42imc8bv5-lua-nucleo",
+                "sha256": "15kydmj64jhxv5ksayfgkwzmgzd7raj7xp636x8a7c3ybiirs90n",
+                "fetchSubmodules": true,
+                "deepClone": false,
+                "leaveDotGit": false
+              }
+              '') ["date" "path"]) ;
+
+                disabled = with luapkgs; (luaOlder "5.1");
+
+                meta = {
+                  homepage = "http://github.com/lua-nucleo/lua-nucleo";
+                  description = "A random collection of core and utility level Lua libraries";
+                  license.fullName = "MIT/X11";
+                };
+              };
+            in
+              luapkgs.buildLuarocksPackage {
+                pname = "lua-crontab";
+                version = "1.0.0-1";
+                knownRockspec = (pkgs.fetchurl {
+                  url    = "https://luarocks.org/lua-crontab-1.0.0-1.rockspec";
+                  sha256 = "1aynwxq488sxd2lyng4wnswfkqna5n07sfmdainlqlhcb6jan161";
+                }).outPath;
+                src = pkgs.fetchgit ( removeAttrs (builtins.fromJSON ''{
+                "url": "https://github.com/logiceditor-com/lua-crontab.git",
+                "rev": "e3929a572e8164f968da4dcbdf1c4464a2870699",
+                "date": "2021-07-29T14:12:08+03:00",
+                "path": "/nix/store/rsc49m4f1mjqbffaq7axcf31rgxxfjb3-lua-crontab",
+                "sha256": "0zkqslw3vg495k8g010cz931vlzfyynq4kcwi1jbbppia521z6rx",
+                "fetchSubmodules": true,
+                "deepClone": false,
+                "leaveDotGit": false
+              }
+              '') ["date" "path"]) ;
+
+                propagatedBuildInputs = [ nucleo ];
+
+                meta = {
+                  homepage = "http://github.com/logiceditor-com/lua-crontab";
+                  description = "Stores crontab-like rules for events and calculates timestamps for their occurrences";
+                  license.fullName = "MIT/X11";
+                };
+              }
+          );
+
+          buildTypes = {
+            lua5_1 = [(pkgs.lua5_1.withPackages (ps: [ps.luaposix ps.penlight (buildExtensions pkgs.lua51Packages)]))];
+            lua5_2 = [(pkgs.lua5_2.withPackages (ps: [ps.luaposix ps.penlight (buildExtensions pkgs.lua52Packages)]))];
+            lua5_3 = [(pkgs.lua5_3.withPackages (ps: [ps.luaposix ps.penlight (buildExtensions pkgs.lua53Packages)]))];
+            lua5_4 = [(pkgs.lua5_4.withPackages (ps: [ps.luaposix ps.penlight (buildExtensions pkgs.lua54Packages)]))];
           };
         in
         let
@@ -34,7 +96,6 @@
 
             src = ./.;
             
-            # nativeBuildInputs = [ pkgs.qt5.wrapQtAppsHook ]; 
             buildInputs = defaultDeps ++ luaPackages;
         });
         in