programs: add mepo

hosts/common/programs/assorted.nix

@@ -186,6 +186,7 @@ let
       komikku
       koreader
       # lollypop
+      mepo  # maps viewer
       # mpv
       # networkmanagerapplet
       # newsflash

hosts/common/programs/default.nix

@@ -14,6 +14,7 @@
     ./komikku.nix
     ./koreader
     ./libreoffice.nix
+    ./mepo.nix
     ./mpv.nix
     ./neovim.nix
     ./newsflash.nix

hosts/common/programs/mepo.nix

@@ -0,0 +1,18 @@
+# docs: <https://git.sr.ht/~mil/mepo>
+# irc #mepo:irc.oftc.net
+{ config, lib, ... }:
+
+{
+  sane.programs.mepo = {
+    persist.plaintext = [ ".cache/mepo/tiles" ];
+    # ~/.cache/mepo/savestate has precise coordinates and pins: keep those private
+    persist.private = [ ".cache/mepo/savestate" ];
+  };
+
+  programs.mepo = lib.mkIf config.sane.programs.mepo.enabled {
+    # enable location services (via geoclue)
+    enable = true;
+    # more precise, via gpsd ("may require additional config")
+    # programs.mepo.gpsd.enable = true
+  };
+}