nix: move all nixos configuration to nixosModules

export them

nix/configurations/host/carbon/packages.nix

@@ -1,38 +0,0 @@
-{ pkgs, ... }:
-{
-  environment.systemPackages = [
-    pkgs.curl
-    pkgs.stow
-    pkgs.gcc
-  ];
-
-  programs.vim.defaultEditor = true;
-  programs.git.enable = true;
-
-  programs.dconf.enable = true;
-  services.gnome.gnome-keyring.enable = true;
-  programs.seahorse.enable = true;
-
-  # programs.steam.enable = true;
-
-  services.hoogle = {
-    enable = true;
-    packages =
-      self:
-      map pkgs.haskell.lib.doHaddock [
-        self.xmonad
-        self.xmonad-contrib
-        self.xmonad-extras
-        self.hip # image processing
-      ];
-  };
-
-  virtualisation = {
-    docker.enable = true;
-    virtualbox.host.enable = true;
-  };
-  users.users."leana".extraGroups = [
-    "docker"
-    "vboxusers"
-  ];
-}