Fix shell, Use GHC 8.10.7 for cabal-install

Author: cidkidnix

default.nix

@@ -555,7 +555,6 @@ in let this = rec {
       cabal-install
       ghcid
       hasktags
-      hlint
       stylish-haskell # Recent stylish-haskell only builds with AMP in place
       reflex-ghci
       ;

nixpkgs-overlays/ghc.nix

@@ -2,6 +2,7 @@
 
 self: super: {
   cabal2nix-unwrapped = self.haskell.packages.ghc8107.cabal2nix;
+  cabal-install = self.haskell.packages.ghc8107.cabal-install;
   # Apply custom patches to Haskell compilers
   haskell = super.haskell // {
     compiler = super.haskell.compiler // {

packages.nix

@@ -20,5 +20,6 @@ with haskellPackages;
   # Add ghc-only packages here                                                 #
   ##############################################################################
   reflex-todomvc
+  hlint
 
 ] else []) ++ builtins.concatLists (map (x: (x.override { mkDerivation = drv: { out = (drv.buildDepends or []) ++ (drv.libraryHaskellDepends or []) ++ (drv.executableHaskellDepends or []); }; }).out) [ reflex reflex-dom reflex-todomvc ])