fixes and improvements

system/modules/dev.nix

@@ -1,11 +1,22 @@
 { config, lib, pkgs, ... }:
-
 {
   environment.systemPackages = with pkgs; [
     jdk
     jetbrains.pycharm-professional 
+    #(jetbrains.plugins.addPlugins jetbrains.pycharm-professional ["github-copilot"])
+    R
     mongodb-compass
   ];
+  virtualisation.virtualbox.host.enable = true;
+  virtualisation.virtualbox.host.enableExtensionPack = true;
 
+  programs.nix-ld.enable = true;
+  programs.nix-ld.libraries = with pkgs; [
+    zlib # numpy
+    libgcc  # sqlalchemy
+    # that's where the shared libs go, you can find which one you need using 
+    # nix-locate --top-level libstdc++.so.6  (replace this with your lib)
+    # ^ this requires `nix-index` pkg
+  ];
 
 }