mobile-timezone be upon ye

configuration-nixos.nix

@@ -10,8 +10,6 @@ in {
   boot.loader.efi.canTouchEfiVariables = true;
   boot.loader.efi.efiSysMountPoint = "/boot";
 
-  time.timeZone = "America/Phoenix";
-
   systemd.services.nix-key-setup = {
     description = "Generate a nix build signing key";
     script = ''
@@ -91,7 +89,7 @@ in {
         pkgs.nettools
         pkgs.util-linux
 
-        pkgs.systemd
+        config.systemd.package
       ]);
 
       ZED_USE_DBUS = "1";

dotfiles/waybar/config.jsonc

@@ -1,7 +1,7 @@
 {
     "modules-left": ["sway/workspaces", "sway/mode"],
     "modules-center": ["clock"],
-    "modules-right": ["tray", "sway/scratchpad", "battery", "idle_inhibitor", "custom/notification", "power-profiles-daemon", "custom/power"],
+    "modules-right": ["tray", "sway/scratchpad", "battery", "inhibitor", "custom/notification", "power-profiles-daemon", "custom/power"],
     "sway/workspaces": {
         "all-outputs": true
     },
@@ -23,12 +23,13 @@
         "format-icons": ["", "", "", "", ""],
         "max-length": 25,
         "events": {
-            "on-discharging-low": "notify-send -u normal 'Low Battery'",
-            "on-discharging-warning": "notify-send -u normal 'Low Battery'",
-            "on-discharging-critical": "notify-send -u critical 'Battery empty - system will power off soon'",
+            "on-discharging-low": "notify-send -t 5000 -a System -i battery -u normal 'Low Battery'",
+            "on-discharging-warning": "notify-send -t 10000 -a System -i battery -u normal 'Very Low Battery'",
+            "on-discharging-critical": "notify-send -a System -i battery -u critical 'Battery empty - system will power off soon'",
 	},
     },
-    "idle_inhibitor": {
+    "inhibitor": {
+        "what": ["idle", "sleep", "handle-lid-switch"],
         "format": "{icon}",
         "format-icons": {
             "activated": "󰅶",
@@ -63,7 +64,7 @@
     },
     "custom/notification": {
       "tooltip": true,
-      "format": "<span size='10pt'>{icon}</span>",
+      "format": "{icon}",
       "format-icons": {
         "notification": "󱅫",
         "none": "󰂜",

dotfiles/waybar/style.css

@@ -61,8 +61,9 @@ window#waybar {
 #custom-power,
 #custom-menu,
 #power-profiles-daemon,
-#idle_inhibitor {
-    padding: 0 10px;
+#inhibitor,
+#custom-notification {
+    padding: 0 6px;
 }
 #mode {
     color: #cc3436;
@@ -75,19 +76,16 @@ window#waybar {
     padding: 1px 1px 1px 6px;
 }
 /*-----Indicators----*/
-#idle_inhibitor.activated {
+#inhibitor.activated {
     color: #2dcc36;
 }
 #pulseaudio.muted {
     /*color: #cc3436;*/
 }
-#upower.charging {
-    color: #2dcc36;
-}
-#upower.warning:not(.charging) {
+#battery.warning:not(.charging) {
     color: #e6e600;
 }
-#upower.critical:not(.charging) {
+#battery.critical:not(.charging) {
     color: #cc3436;
 }
 #temperature.critical {

flake.nix

@@ -28,6 +28,7 @@
           ./sites/${name}/configuration.nix
           { nixpkgs.buildPlatform = platform; }
           self.modules.audrey-sway
+          self.modules.mobile-timezone
           bingosync.nixosModules.default
           #nixos-defcon.nixosModules.pkgsOverlay
           #nixos-defcon.nixosModules.tulip
@@ -50,7 +51,7 @@
     in builtins.listToAttrs packagesList;
     modules = let
       modulesFiles = builtins.attrNames (builtins.readDir ./modules);
-      toModulesList = filename: { name = nixpkgs.lib.strings.removeSuffix ".nix"filename; value = ./modules/${filename}; };
+      toModulesList = filename: { name = nixpkgs.lib.strings.removeSuffix ".nix" filename; value = ./modules/${filename}; };
       modulesList = builtins.map toModulesList modulesFiles;
     in builtins.listToAttrs modulesList;
   };

modules/mobile-timezone/default.nix

@@ -0,0 +1,37 @@
+{
+    config,
+    pkgs,
+    lib,
+    ...
+}:
+let cfg = config.services.mobileTimezone;
+in {
+    options.services.mobileTimezone = {
+        enable = lib.mkEnableOption "automatic mobile timezone configuration";
+        interface = lib.mkOption {
+            description = "Interface to use to fetch a public IP";
+            type = lib.types.str;
+        };
+    };
+    config = lib.mkIf cfg.enable {
+        assertions = [
+            { assertion = config.time.timeZone == null;
+              message = "mobileTimezone requires mutable time zone configuration";
+            }
+            {
+              assertion = config.networking.networkmanager.enable;
+              message = "mobileTimezone requires use of NetworkManager";
+            }
+        ];
+
+        networking.networkmanager.dispatcherScripts = [{
+            source = pkgs.writeShellScript "mobile-timezone" ''
+              export WIRELESS_INTERFACE="${cfg.interface}"
+              export PATH="${lib.strings.makeBinPath (with pkgs; [ config.systemd.package bash geoipWithDatabase sudo curl gnugrep gnused coreutils libnotify procps gawk libc ])}"
+              if [[ "$2" == "connectivity-change" && "$CONNECTIVITY_STATE" == "FULL" ]]; then
+                  ${./mobile-timezone.sh}
+              fi
+            '';
+        }];
+    };
+}

modules/mobile-timezone/mobile-timezone.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -e
+
+if [[ -z "$WIRELESS_INTERFACE" ]]; then
+    echo "Please set \$WIRELESS_INTERFACE" >&2
+    exit 1
+fi
+
+CURRENT_TZ="$(timedatectl | grep 'Time zone:' | cut -d: -f2 | cut -d' ' -f2)"
+
+NEW_TZ="$(curl -Ss --interface "$WIRELESS_INTERFACE" https://ipaddresslocation.net/ip-to-timezone | grep -o 'Time Zone:.*' | cut -d' ' -f3)"
+# COORDS="$(geoiplookup "$(curl -Ss --interface "$WIRELESS_INTERFACE" https://ipconfig.io)" | grep 'GeoIP City Edition, Rev 1' | grep -oE -- '-?[[:digit:]]+\.[[:digit:]]+, -?[[:digit:]]+\.[[:digit:]]+' | sed -E -e 's@, @+@g' -e 's@^@+@g' -e 's@\+-@-@g')"
+# NEW_TZ="$( (echo 1; echo 1) | tzselect -c "$COORDS")"
+
+if [[ "$NEW_TZ" != "$CURRENT_TZ" ]]; then
+    timedatectl set-timezone "$NEW_TZ"
+    pkill -USR2 waybar 2>/dev/null || true  # reload current time immediately instead of waiting for the next update
+    for RUNTIME in /run/user/*; do
+        sudo -u "#${RUNTIME#/run/user/}" XDG_RUNTIME_DIR="$RUNTIME" notify-send -i clock -t 5000 -a System "$(echo "Time zone updated to $NEW_TZ"; echo "Current time is $(date +%r)")"
+    done
+fi

sites/daisy/configuration.nix

@@ -16,6 +16,9 @@
   networking.hostName = "daisy";
   networking.hostId = "293a1290";
 
+  services.mobileTimezone.enable = true;
+  services.mobileTimezone.interface = "wlp0s20f3";
+
   hardware.bluetooth.enable = true;
   hardware.bluetooth.powerOnBoot = true;
 
@@ -139,4 +142,10 @@
     enable = true;
     qemu.package = pkgs.qemu_kvm;
   };
+
+  systemd.package = pkgs.systemd.overrideAttrs (prev: {
+    postPatch = (prev.postPatch or "") + ''
+      substituteInPlace src/nspawn/nspawn.c src/basic/time-util.c --replace-fail '"../etc/zoneinfo/"' '"../etc/zoneinfo/", "zoneinfo/"'
+    '';
+  });
 }

sites/sunflower/configuration.nix

@@ -23,6 +23,8 @@
     ];
   };
 
+  time.timeZone = "America/Phoenix";
+
   system.stateVersion = "24.11";
 
   security.sudo.wheelNeedsPassword = false;

sites/tulip/configuration.nix

@@ -11,6 +11,8 @@
   networking.hostName = "tulip";
   networking.hostId = "3c342abd";
 
+  time.timeZone = "America/Phoenix";
+
   system.stateVersion = "24.11";
 
   security.sudo.wheelNeedsPassword = false;