refactor shell config

home/modules/programs/fish.nix

@@ -0,0 +1,35 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  cfg = config.youthlic.programs.fish;
+in {
+  options = {
+    youthlic.programs.fish = {
+      enable = lib.mkEnableOption "fish";
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    programs = {
+      fish = {
+        enable = true;
+        interactiveShellInit = ''
+          fish_vi_key_bindings
+        '';
+        functions = {
+          __fish_command_not_found_handler = {
+            body = "__fish_default_command_not_found_handler $argv[1]";
+            onEvent = "fish_command_not_found";
+          };
+          fish_greeting = {
+            body = ''
+              fastfetch
+            '';
+          };
+        };
+      };
+      fastfetch.enable = true;
+    };
+  };
+}