Add Runtime.Bus with channel-based effect interpreter

default.nix

@@ -1,5 +1,5 @@
-{ mkDerivation, aeson, base, bytestring, lens, lens-aeson, lib
-, network, text, time, websockets
+{ mkDerivation, aeson, base, bytestring, hspec, lens, lens-aeson
+, lib, network, stm, text, time, websockets
 }:
 mkDerivation {
   pname = "home-assistant-controller";
@@ -8,10 +8,11 @@ mkDerivation {
   isLibrary = true;
   isExecutable = true;
   libraryHaskellDepends = [
-    aeson base bytestring lens lens-aeson network text time websockets
+    aeson base bytestring lens lens-aeson network stm text time
+    websockets
   ];
   executableHaskellDepends = [ base ];
-  testHaskellDepends = [ base ];
+  testHaskellDepends = [ aeson base hspec stm text ];
   license = lib.meta.getLicenseFromSpdxId "BSD-3-Clause";
   mainProgram = "home-assistant-controller";
 }