Add tools and other stuff for a more comf. admin enviorn. on the hosts

config/common/admin-environment.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    vim
+    joe
+    nano
+    htop
+    btop
+    ripgrep
+    fd
+    tmux
+    git
+    curl
+    rsync
+    usbutils
+    nix-tree
+    # For kitty terminfo.
+    kitty
+  ];
+}

config/common/default.nix

@@ -3,6 +3,7 @@
 {
   imports = [
     ./acme.nix
+    ./admin-environment.nix
     ./default-host-platform.nix
     ./default-state-version.nix
     ./localization.nix