Allow including the earth's curvature in paths

marker.nix

@@ -104,6 +104,7 @@ in
         pathStyle = {
           weight = 10;
           color = "purple";
+          geodesic = true;
         };
       };
 

path.nix

@@ -24,6 +24,11 @@ let
         type = colorType;
         default = "blue";
       };
+
+      geodesic = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+      };
     };
   };
 
@@ -86,6 +91,7 @@ in
                 [
                   "weight:${toString path.style.weight}"
                   "color:${path.style.color}"
+                  "geodesic:${lib.boolToString path.style.geodesic}"
                 ]
                 ++ builtins.map attrForLocation path.locations;
             in