anchor.diff:      tryReflexShell = reflex-platform.tryReflexShell;
       ghcjs.reflexTodomvc = jsexeHydra reflex-platform.ghcjs.reflex-todomvc;
       # Doesn't currently build. Removing from CI until fixed.
  -    ghcjs8_4.reflexTodomvc = jsexeHydra reflex-platform.ghcjs8_4.reflex-todomvc;
  +    ghcjs8_6.reflexTodomvc = jsexeHydra reflex-platform.ghcjs8_6.reflex-todomvc;
       ghc.ReflexTodomvc = reflex-platform.ghc.reflex-todomvc;
  -    ghc8_4.reflexTodomvc = reflex-platform.ghc8_4.reflex-todomvc;
  +    ghc8_6.reflexTodomvc = reflex-platform.ghc8_6.reflex-todomvc;
       profiled = {
  -      ghc8_4.reflexTodomvc = reflex-platform-profiled.ghc8_4.reflex-todomvc;
  +      ghc8_6.reflexTodomvc = reflex-platform-profiled.ghc8_6.reflex-todomvc;
       } // lib.optionalAttrs (reflex-platform.androidSupport) {
         inherit (reflex-platform-profiled) androidReflexTodomvc;
  -      inherit (reflex-platform-profiled) androidReflexTodomvc-8_4;
  +      inherit (reflex-platform-profiled) androidReflexTodomvc-8_6;
         a = reflex-platform-profiled.ghcAndroidAarch64.a;
       } // lib.optionalAttrs (reflex-platform.iosSupport) {
         inherit (reflex-platform-profiled) iosReflexTodomvc;
  -      inherit (reflex-platform-profiled) iosReflexTodomvc-8_4;
  +      inherit (reflex-platform-profiled) iosReflexTodomvc-8_6;
         a = reflex-platform-profiled.ghcIosAarch64.a;
       };
       skeleton-test-ghc = skeleton-test.ghc;
  
positive.code:       otherDeps;
    } // lib.optionalAttrs (reflex-platform.androidSupport) {
      inherit (reflex-platform) androidReflexTodomvc;
      inherit (reflex-platform) androidReflexTodomvc-8_4;
      a = reflex-platform.ghcAndroidAarch64.a;
      skeleton-test-project-android = skeleton-test.project.android;
    } // lib.optionalAttrs (reflex-platform.iosSupport) {
      inherit (reflex-platform) iosReflexTodomvc;
      inherit (reflex-platform) iosReflexTodomvc-8_4;
      a = reflex-platform.ghcIosAarch64.a;
      skeleton-test-project-ios = skeleton-test.project.ios;
    } // drvListToAttrs otherDeps
  
negative.code:     # attributes in the overlays.
  
      dep = {}
        // reflex-platform.ghcjs8_6._dep
        // (lib.optionalAttrs reflex-platform.androidSupport reflex-platform.ghcAndroidAarch64._dep)
        // benchmark.dep
        ;
  