default.nix

@@ -1,27 +1,14 @@
-{
+{ pkgs ? import (
-  compiler ? "ghc865",
+  builtins.fetchGit {
-  withHIE ? false
+    name = "nixpkgs-pinned";
+    url = https://github.com/NixOS/nixpkgs/;
+    ref = "refs/heads/release-20.03";
+    rev = "da7ddd822e32aeebea00e97ab5aeca9758250a40";
+  }) {},
+  compiler ? "ghc865"
 }:
 
 let
-  # pin all-hies for getting the language server
-  all-hies = fetchTarball {
-    url = "https://github.com/infinisil/all-hies/tarball/b8fb659620b99b4a393922abaa03a1695e2ca64d";
-    sha256 = "sha256:0br6wsqpfk1lzz90f7zw439w1ir2p54268qilw9l2pk6yz7ganfx";
-  };
-  pkgs = import (
-    builtins.fetchGit {
-      name = "nixpkgs-pinned";
-      url = https://github.com/NixOS/nixpkgs/;
-      ref = "refs/heads/release-20.03";
-      rev = "076c67fdea6d0529a568c7d0e0a72e6bc161ecf5";
-    }) {
-      # Pass no config for purity
-          config = {};
-              overlays = [
-                      (import all-hies {}).overlay
-                          ];
-    };
   hp = pkgs.haskell.packages."${compiler}";
   src = pkgs.nix-gitignore.gitignoreSource [] ./.;
   drv = hp.callCabal2nix "Hash2Pub" "${src}/Hash2Pub.cabal" {};
@@ -38,7 +25,6 @@ in
         hlint
         stylish-haskell
         pkgs.python3Packages.asn1ate
-      ]
+      ];
-      ++ (if withHIE then [ hie ] else []);
   };
 }

shell.nix

@@ -1 +1 @@
-(import ./default.nix {withHIE = true;}).shell
+(import ./default.nix {}).shell