Add my binary cache and warn when stuff is not setup

system/configuration.nix

@@ -237,6 +237,13 @@ in {
   networking.firewall.enable = false;
   security.sudo.wheelNeedsPassword = false;
   nix = {
+    binaryCaches = [
+      "https://cache.nixos.org/"
+      "https://lelgenio.cachix.org"
+    ];
+    binaryCachePublicKeys = [
+      "lelgenio.cachix.org-1:W8tMlmDFLU/V+6DlChXjekxoHZpjgVHZpmusC4cueBc="
+    ];
     settings = {
       substituters = ["https://hyprland.cachix.org"];
       trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];

user/home.nix

@@ -116,6 +116,16 @@ in {
       set -g __accent_color "${accent.color}"
       alias _fish_prompt_accent "_fish_prompt_color '$__accent_color'"
       fzf_key_bindings
+      set_color red
+      if not test -d "$HOME/.password-store/"
+        echo "Password Store not yet setup"
+      end
+      if not test -f "$HOME/.ssh/id_rsa"
+        echo "SSH keys not yet setup"
+      end
+      if not rustc --version &> /dev/null
+        rustup default stable &>/dev/null &
+      end
     '';
     shellAbbrs = {
       v = "kak";