diff --git a/pkgs/development/compilers/ghcjs/head.nix b/pkgs/development/compilers/ghcjs/head.nix
index f062a3db8118..84eb2d8bd0da 100644
--- a/pkgs/development/compilers/ghcjs/head.nix
+++ b/pkgs/development/compilers/ghcjs/head.nix
@@ -47,6 +47,4 @@ bootPkgs.callPackage ./base.nix {
   stage2 = import ./head_stage2.nix;
 
   patches = [ ./ghcjs-head.patch ];
-
-  broken = true;  # https://hydra.nixos.org/build/71923242
 }
diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix
index 4ea4a5c28465..7924a39fa96d 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix
@@ -74,6 +74,7 @@ self: super: {
   indents = dontCheck super.indents;
 
   # Newer versions require GHC 8.2.
+  haddock-library = self.haddock-library_1_4_3;
   haddock-api = self.haddock-api_2_17_4;
   haddock = self.haddock_2_17_5;
 }