Adjust low battery icon threshold to 20%

This reverts commit c3384bd25cd64d8d4014363d0564534138497cc5.

hosts/laptop/default.nix

@@ -19,5 +19,7 @@
 
   modules.display.scale = 2;
 
+  modules.steam.remotePlay.enable = true;
+
   hardware.bluetooth.enable = true;
 }

modules/nixos/default.nix

@@ -17,6 +17,7 @@
     ./plasma.nix
     ./sddm.nix
     ./services.nix
+    ./steam.nix
     ./stylix.nix
     ./system.nix
     ./tailscale.nix

modules/nixos/network.nix

@@ -1,12 +1,20 @@
 {
   host,
+  config,
+  lib,
   pkgs,
   ...
 }:
 {
   networking = {
     hostName = "${host}";
-    networkmanager.enable = true;
+    networkmanager = {
+      enable = true;
+      # resolved is only enabled when tailscale is; pointing NM at a
+      # systemd-resolved that isn't running would break DNS entirely
+      dns = lib.mkIf config.services.resolved.enable "systemd-resolved";
+    };
+    wireless.enable = true;
   };
 
   environment.systemPackages = with pkgs; [ networkmanagerapplet ];

modules/nixos/steam.nix

@@ -0,0 +1,20 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+let
+  cfg = config.modules.steam;
+in
+{
+  config = mkIf cfg.enable {
+    programs.steam = {
+      enable = true;
+      remotePlay.openFirewall = cfg.remotePlay.enable;
+      dedicatedServer.openFirewall = cfg.remotePlay.enable;
+    };
+
+    hardware.steam-hardware.enable = true;
+  };
+}

modules/nixos/tailscale.nix

@@ -10,5 +10,12 @@ in
 {
   config = mkIf cfg.enable {
     services.tailscale.enable = true;
+
+    # systemd-resolved is needed for tailscale's MagicDNS to work properly
+    services.resolved.enable = true;
+
+    # tailscaled applies its DNS config (split DNS, MagicDNS) to
+    # systemd-resolved over D-Bus, which is polkit-guarded
+    security.polkit.enable = true;
   };
 }

modules/options/default.nix

@@ -17,6 +17,7 @@
     ./plasma.nix
     ./screenshot.nix
     ./shell.nix
+    ./steam.nix
     ./system.nix
     ./tailscale.nix
     ./vm.nix

modules/options/steam.nix

@@ -0,0 +1,13 @@
+{
+  lib,
+  ...
+}:
+with lib;
+{
+  options.modules.steam = {
+    enable = mkEnableOption "Steam";
+    remotePlay = {
+      enable = mkEnableOption "Steam Remote Play firewall rules";
+    };
+  };
+}

profiles/desktop/default.nix

@@ -30,4 +30,6 @@
   modules.screenshot.enable = true;
 
   modules.tailscale.enable = true;
+
+  modules.steam.enable = true;
 }