1 files changed, 43 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/system/localtime.nix b/nixpkgs/nixos/modules/services/system/localtime.nix
new file mode 100644
index 000000000000..04595fc82fbb
--- /dev/null
+++ b/nixpkgs/nixos/modules/services/system/localtime.nix
@@ -0,0 +1,43 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.localtime;
+in {
+  options = {
+    services.localtime = {
+      enable = mkOption {
+        default = false;
+        description = ''
+          Enable <literal>localtime</literal>, simple daemon for keeping the system
+          timezone up-to-date based on the current location. It uses geoclue2 to
+          determine the current location and systemd-timedated to actually set
+          the timezone.
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    services.geoclue2 = {
+      enable = true;
+      appConfig."localtime" = {
+        isAllowed = true;
+        isSystem = true;
+      };
+    };
+
+    # We use the 'out' output, since localtime has its 'bin' output
+    # first, so that is what we get if we use the derivation bare.
+    # Install the polkit rules.
+    environment.systemPackages = [ pkgs.localtime.out ];
+    # Install the systemd unit.
+    systemd.packages = [ pkgs.localtime.out ];
+
+    systemd.services.localtime = {
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig.Restart = "on-failure";
+    };
+  };
+}