nix: cleaned up files

nixos/configuration.nix

@@ -57,7 +57,6 @@
   # List packages installed in system profile.
   environment.systemPackages = with pkgs; [
     wl-clipboard
-    nodejs
     vim  # Default editor
     wget
     git
@@ -66,10 +65,6 @@
     p7zip
     btop
     libnotify
-
-    gcc
-    rustc
-    cargo
   ];
   
   environment.sessionVariables = {

system/development/default.nix

@@ -0,0 +1,7 @@
+{pkgs, ...}: {
+  environment.systemPackages = with pkgs; [
+    gcc
+    rustc
+    cargo
+  ];
+}