fix(tailscale): open Tailscale's WireGuard port in the firewall

services.tailscale.openFirewall defaults to false while the NixOS
firewall is enabled, so argon, krypton and neon dropped unsolicited
inbound 41641/udp. Direct connections then only succeed if the other
peer accepts inbound; between two of these hosts (or a host and a
phone) traffic can fall back to a DERP relay.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

flake.lock

@@ -199,11 +199,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1791293500,
+        "lastModified": 1791642191,
-        "narHash": "sha256-3hwJd2/vG/VYV1P/g7oDgdbNsWODhN5F//Od+hPMm2k=",
+        "narHash": "sha256-0bK0A59rVUn1SRZzo4cNi4VSqAe7vR1gL2/MZl53Frw=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "0e11b7bcba1d74ef8ea10bfdfb1e1a5811a21087",
+        "rev": "c58f54c733a7894d84fa2fdff26cc12088c4b78c",
         "type": "github"
       },
       "original": {
@@ -243,11 +243,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1791128201,
+        "lastModified": 1791721963,
-        "narHash": "sha256-rlsYY/Dg/LhbIj51Aa6TLvRpZeb3KZgUTd7llQ5XcJE=",
+        "narHash": "sha256-BYhx89XJltnRyQeuDKHVL5eSqbbfAcOKuDts7QRsrxQ=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "31cc5f4d9b9ba601071e8b8504601b9b176e2756",
+        "rev": "60a624466c08787ee8303393b7d4752d1826f14f",
         "type": "github"
       },
       "original": {
@@ -258,11 +258,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1791260994,
+        "lastModified": 1791594108,
-        "narHash": "sha256-Miqqk/ammqnTUxaoCyvtwoPeLbI1ksFyLxi/CazZpWY=",
+        "narHash": "sha256-XK4KceonkwD8LuMAt/vNrz982mXJM5jeHAxMwsUXXAQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "151fa4e8ddfdd8dd25d945ad94ed54a13de9f6e4",
+        "rev": "6510408d147d8c5e6d76043e899e9251756f6a75",
         "type": "github"
       },
       "original": {
@@ -281,11 +281,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1791235629,
+        "lastModified": 1791769517,
-        "narHash": "sha256-ySIbhYpjg8CnfuJTs/cfkEQuGpk02IzT+a3VDz7Cec0=",
+        "narHash": "sha256-OVx8OKPdW1fLfDi1oemFkfSvF354UwU5I0GXnNAGygw=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "8fbc7d3ff1154fab898895e7c4e71a4d06936ce3",
+        "rev": "84e901ee80e6523068dc3baf86cbf7cdcbf16902",
         "type": "github"
       },
       "original": {
@@ -301,11 +301,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1791249451,
+        "lastModified": 1791817518,
-        "narHash": "sha256-ucUgpRWCvXd17/29C1rPYliLTz8mdNeOvsSGdtBGMAY=",
+        "narHash": "sha256-DGVFzc0YXy38vCuS43PZPIkTVKaKxpNgzkNmJsHouP8=",
         "owner": "noctalia-dev",
         "repo": "noctalia-shell",
-        "rev": "4237bc286bb9db7fec8ba663bfc42779af9b1372",
+        "rev": "02cb10745d6274e4a696a00308c8ef4cefa7416d",
         "type": "github"
       },
       "original": {
@@ -413,11 +413,11 @@
         "tinted-zed": "tinted-zed"
       },
       "locked": {
-        "lastModified": 1790880877,
+        "lastModified": 1791574276,
-        "narHash": "sha256-j42XqSKOAtuqtfHiElyHre2YS/h3Y3q1DjFnKODN1/k=",
+        "narHash": "sha256-UMnLnZ3JlA7UTBNNNx1rNsXYoPP/cirXLCKGiQ/yDx8=",
         "owner": "nix-community",
         "repo": "stylix",
-        "rev": "7c065d1ed05381fceb2403b963c5ad150f32fe39",
+        "rev": "2856c4c6a845b9bec98828ef197abe176e4806bb",
         "type": "github"
       },
       "original": {
@@ -429,11 +429,11 @@
     "systems": {
       "flake": false,
       "locked": {
-        "lastModified": 1774449309,
+        "lastModified": 1791244623,
-        "narHash": "sha256-brhZ8DmuGtzkCYHJg4HEd602amKm89Y9ytsFZ5uWD1w=",
+        "narHash": "sha256-uuanbkFk8a313Zfrxdcz8Us/yQtaxNnKJtX8v0ZPpd8=",
         "owner": "nix-systems",
         "repo": "default",
-        "rev": "c29398b59d2048c4ab79345812849c9bd15e9150",
+        "rev": "d36eeed142f88b5a636f2e3856a53c61654cf29b",
         "type": "github"
       },
       "original": {

hosts/argon/configuration.nix

@@ -10,12 +10,13 @@
     ../../modules/nixos/bootloader.nix
     ../../modules/nixos/certificates.nix
     ../../modules/nixos/data-drives.nix
+    ../../modules/nixos/docker.nix
     ../../modules/nixos/gnupg.nix
-    ../../modules/nixos/greetd.nix
     ../../modules/nixos/lanzaboote.nix
     ../../modules/nixos/locales.nix
     ../../modules/nixos/networking.nix
     ../../modules/nixos/niri.nix
+    ../../modules/nixos/noctalia-greeter.nix
     ../../modules/nixos/noctalia.nix
     ../../modules/nixos/openssh.nix
     ../../modules/nixos/packages.nix

modules/home-manager/git.nix

@@ -24,6 +24,7 @@ in
 
   programs.git = {
     enable = true;
+    lfs.enable = true;
     settings = {
       push.autoSetupRemote = true;
       user = {

modules/home-manager/niri.nix

@@ -42,6 +42,7 @@ in
       input = {
         keyboard = {
           xkb.layout = "ch";
+          xkb.variant = "de_nodeadkeys";
           numlock = { };
         };
         mouse = {

modules/home-manager/programs.nix

@@ -8,6 +8,7 @@
     fastfetch
     keepassxc
     signal-desktop
+    tea
     teamspeak6-client
     typst
     zathura

modules/home-manager/stylix.nix

@@ -1,5 +1,5 @@
 # One Nord palette for everything stylix has a target for: gtk, qt,
-# noctalia, ghostty. Niri has no target and reads the colors in niri.nix. 
+# noctalia, ghostty. Niri has no target and reads the colors in niri.nix.
 # Only the home-manager module is used, so boot, console and sddm are left alone.
 
 { pkgs, ... }:
@@ -33,6 +33,9 @@
       # the hand-built status line in tmux.nix uses ANSI color names, which
       # already follow the terminal palette
       tmux.enable = false;
+      # rofi isn't used, and the target still sets the renamed
+      # programs.rofi.font, which warns on every evaluation
+      rofi.enable = false;
     };
   };
 }

modules/nixos/docker.nix

@@ -8,7 +8,7 @@
         "1.1.1.1"
         "8.8.8.8"
       ];
-      log-driver = "journald";
+      log-driver = "local";
       registry-mirrors = [ "https://mirror.gcr.io" ];
     };
   };

modules/nixos/noctalia-greeter.nix

@@ -0,0 +1,22 @@
+{
+  # greetd display manager with the graphical noctalia greeter, replaces greetd.nix.
+  # The nixpkgs module enables greetd, accountsservice (avatars) and polkit, and
+  # launches noctalia-greeter-session. Sessions (niri) are discovered from
+  # wayland-sessions, the last one picked is remembered.
+  # See https://docs.noctalia.dev/greeter/
+  services.displayManager.noctalia-greeter = {
+    enable = true;
+
+    # lets the shell's "Sync Now" / auto-sync copy wallpaper, palette and monitor
+    # layout to the greeter without an admin prompt (appearance only)
+    passwordlessSyncUsers = [ "aaron" ];
+
+    # rendered to /var/lib/noctalia-greeter/greeter.toml, wins over synced values
+    settings = {
+      user.default = "aaron";
+      # same layout as niri, otherwise the password is typed on a us keymap
+      keyboard.layout = "ch";
+      keyboard.variant = "de_nodeadkeys";
+    };
+  };
+}

modules/nixos/services.nix

@@ -4,6 +4,10 @@
     tuned.enable = true;
     upower.enable = true;
     fwupd.enable = true;
-    tailscale.enable = true;
+    tailscale = {
+      enable = true;
+      # inbound 41641/udp so peers can connect directly instead of via DERP
+      openFirewall = true;
+    };
   };
 }