mepo: init module

nixos/doc/manual/from_md/release-notes/rl-2211.section.xml

@@ -457,6 +457,14 @@
           <link linkend="opt-services.uptime-kuma.enable">services.uptime-kuma</link>.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          <link xlink:href="https://mepo.milesalan.com">Mepo</link>, a
+          fast, simple, hackable OSM map viewer for mobile and desktop
+          Linux. Available as
+          <link linkend="opt-programs.mepo.enable">programs.mepo.enable</link>.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
   <section xml:id="sec-release-22.11-incompatibilities">

nixos/doc/manual/release-notes/rl-2211.section.md

@@ -149,6 +149,8 @@ Available as [services.patroni](options.html#opt-services.patroni.enable).
 
 - [Uptime Kuma](https://uptime.kuma.pet/), a fancy self-hosted monitoring tool. Available as [services.uptime-kuma](#opt-services.uptime-kuma.enable).
 
+- [Mepo](https://mepo.milesalan.com), a fast, simple, hackable OSM map viewer for mobile and desktop Linux. Available as [programs.mepo.enable](#opt-programs.mepo.enable).
+
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
 ## Backward Incompatibilities {#sec-release-22.11-incompatibilities}

nixos/modules/module-list.nix

@@ -187,6 +187,7 @@
   ./programs/liboping.nix
   ./programs/light.nix
   ./programs/mdevctl.nix
+  ./programs/mepo.nix
   ./programs/mosh.nix
   ./programs/mininet.nix
   ./programs/msmtp.nix

nixos/modules/programs/mepo.nix

@@ -0,0 +1,46 @@
+{ pkgs, config, lib, ...}:
+with lib;
+let
+  cfg = config.programs.mepo;
+in
+{
+  options.programs.mepo = {
+    enable = mkEnableOption (mdDoc "Mepo");
+
+    locationBackends = {
+      gpsd = mkOption {
+        type = types.bool;
+        default = false;
+        description = mdDoc ''
+          Whether to enable location detection via gpsd.
+          This may require additional configuration of gpsd, see [here](#opt-services.gpsd.enable)
+        '';
+      };
+
+      geoclue = mkOption {
+        type = types.bool;
+        default = true;
+        description = mdDoc "Whether to enable location detection via geoclue";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      mepo
+    ] ++ lib.optional cfg.locationBackends.geoclue geoclue2-with-demo-agent
+    ++ lib.optional cfg.locationBackends.gpsd gpsd;
+
+    services.geoclue2 = mkIf cfg.locationBackends.geoclue {
+      enable = true;
+      appConfig.where-am-i = {
+        isAllowed = true;
+        isSystem = false;
+      };
+    };
+
+    services.gpsd.enable = cfg.locationBackends.gpsd;
+  };
+
+  meta.maintainers = with maintainers; [ laalsaas ];
+}