add multiple envs for packages

nix/hosts/carpates/configuration.nix

@@ -0,0 +1,37 @@
+{ config, pkgs, pkgs-unstable, ... }:
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  # Basic system metadata
+  networking.hostName = "carpates";
+  time.timeZone = "Europe/Madrid";
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  # Nix settings
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nixpkgs.config = {
+    allowUnfree = true;
+    allowBroken = false;
+  };
+
+  # Users
+  users.users.catalin = {
+    isNormalUser = true;
+    description = "catalin";
+    shell = pkgs.fish;
+    extraGroups = [ "networkmanager" "wheel" ];
+  };
+
+  # Minimal services
+  networking.networkmanager.enable = true;
+  services.openssh.enable = true;
+
+  # Base CLI set only (shared across hosts)
+  environment.systemPackages = import ../../base/packages.nix pkgs;
+
+  programs.fish.enable = true;
+
+  system.stateVersion = "24.11";
+}