Remove fish, set nushell as login shell

system/default.nix

@@ -110,6 +110,7 @@
         inherit authorizedKeys;
       };
       ${username} = {
+        shell = pkgs.nushell;
         isNormalUser = true;
         group = "users";
         description = "Evie Litherland-Smith";

system/home/shell/default.nix

@@ -16,7 +16,6 @@
   programs = {
     # Shells
     bash.enable = true;
-    fish.enable = true;
     nushell.enable = true;
     # CLI programs and utilities
     carapace.enable = true;

system/home/shell/starship.nix

@@ -142,11 +142,11 @@
       shell = {
         disabled = false;
         format = "using [$indicator]($style)";
-        bash_indicator = " ";
-        fish_indicator = "󰈺 ";
-        powershell_indicator = " ";
-        cmd_indicator = " ";
-        unknown_indicator = " ";
+        nu_indicator = "ν ";
+        bash_indicator = "  ";
+        powershell_indicator = "  ";
+        cmd_indicator = "  ";
+        unknown_indicator = "  ";
       };
       status = {
         disabled = false;

system/home/terminal/alacritty.nix

@@ -1,9 +1,8 @@
-{ config, ... }:
+{ ... }:
 {
   programs.alacritty = {
     enable = true;
     settings = {
-      shell = "${config.programs.fish.package}/bin/fish";
       window = {
         dynamic_title = true;
         padding = {