Still not working, trying to use Gio async stuff

src/modules/api/location.cr

@@ -1,23 +1,27 @@
 module Wince::Location
   extend self
 
-  @@channel = Channel(Geoclue::Simple).new(1)
   @@client : Geoclue::Simple? = nil
-  @@fiber : Fiber = spawn setup_client
 
   def setup_client
-    @@channel.send Geoclue::Simple.new_sync("space.quietfeathers.Wince", Geoclue::AccuracyLevel::Street, nil)
-    Fiber.yield
+    callback = ->(object : GObject::Object | Nil, result : Gio::AsyncResult) { 
+      @@client = Geoclue::Simple.new_finish(result)
+      puts "location callback"
+    }
+
+    Geoclue::Simple.new(
+      "space.quietfeathers.Wince",
+      Geoclue::AccuracyLevel::Street,
+      nil,
+      callback,
+      nil
+    )
   end
 
   # returns latlon if available, otherwise empty array
   def find_location
-    if !@@fiber.dead?
-      return [] of Float64
-    end
-
     if @@client.nil?
-      @@client = @@channel.receive
+      return [] of Float64
     end
 
     location = @@client.try do |c|