added some utilities and going to nh

nixos/default.nix

@@ -27,6 +27,7 @@
     # Programs
     ./programs/gaming.nix
     ./programs/obs.nix
+    ./programs/nh.nix
   ];
 
   # NO TOUCHY

nixos/programs/nh.nix

@@ -0,0 +1,9 @@
+{ ... }:
+{
+  # nh: nicer frontend for nixos-rebuild / nix-collect-garbage.
+  # Cleanup stays on nix.gc (see system/nix.nix) to avoid two GC timers.
+  programs.nh = {
+    enable = true;
+    flake = "/home/prouk/flake";
+  };
+}

nixos/system/users.nix

@@ -1,7 +1,11 @@
-{ ... }:
+{ pkgs, ... }:
 {
+  # Required so fish is registered in /etc/shells and gets the NixOS environment.
+  programs.fish.enable = true;
+
   users.users.prouk = {
     isNormalUser = true;
     extraGroups = [ "wheel" ];
+    shell = pkgs.fish;
   };
 }