update flake, maomao->mango

os/programs/ai.nix

@@ -1,8 +0,0 @@
-{
-  services.ollama = {
-    enable = true;
-  };
-  services.nextjs-ollama-llm-ui = {
-    enable = true;
-  };
-}

os/programs/default.nix

@@ -3,10 +3,10 @@
     ./basic.nix
     ./doas.nix
     ./niri.nix
-    ./ai.nix
     ./swhkd.nix
-    ./maomaowm.nix
+    ./mango.nix
     ./matlab.nix
     ./misc.nix
+    ./tuigreet.nix
   ];
 }

os/programs/mango.nix

@@ -0,0 +1,5 @@
+{
+  programs = {
+    mango.enable = true;
+  };
+}

os/programs/maomaowm.nix

@@ -1,5 +0,0 @@
-{
-  programs = {
-    maomaowm.enable = true;
-  };
-}

os/programs/tuigreet.nix

@@ -0,0 +1,29 @@
+{ config, pkgs, ... }:
+{
+  services.greetd = {
+    enable = true;
+    settings.default_session = {
+      command = # bash
+        let
+          inherit (config.services.displayManager.sessionData) desktops;
+        in
+        # bash
+        ''
+          ${pkgs.greetd.tuigreet}/bin/tuigreet --time \
+            --sessions ${desktops}/share/xsessions:${desktops}/share/wayland-sessions \
+            --remember --remember-user-session --asterisks --cmd niri-session \
+            --user-menu --greeting "Who TF Are You?" --window-padding 2'';
+      user = "greeter";
+    };
+  };
+
+  systemd.services.greetd.serviceConfig = {
+    Type = "idle";
+    StandardInput = "tty";
+    StandardOutput = "tty";
+    StandardError = "journal";
+    TTYReset = true;
+    TTYVHangup = true;
+    TTYVTDisallocate = true;
+  };
+}