Merge pull request #36727 from deepfire/ghc-8.4

ghc841 config:  fixes for `turtle` and `either`

pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix

@@ -60,6 +60,11 @@ self: super: {
     doCheck         = false;
   });
 
+  ## Needs bump to a versioned attribute
+  ## Setup: Encountered missing dependencies:
+  ## free >=4.9 && <5
+  either = super.either_5;
+
   ## Needs bump to a versioned attribute
   ##     • Could not deduce (Semigroup (IterT m a))
   ##         arising from the superclasses of an instance declaration
@@ -125,6 +130,11 @@ self: super: {
     doCheck         = false;
   });
 
+  ## Needs bump to a versioned attribute
+  ## Setup: Encountered missing dependencies:
+  ## doctest >=0.7 && <0.14
+  turtle = super.turtle_1_5_4;
+
   ## Needs bump to a versioned attribute
   ##     Module ‘Data.Semigroup’ does not export ‘Monoid(..)’
   ##    |