1 files changed, 6 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
index 8d0582a8d0676..4addc834040aa 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
@@ -41,6 +41,9 @@ self: super: {
   unix = null;
   xhtml = null;
 
+  # Needs Cabal 3.0.x.
+  cabal-install = super.cabal-install.overrideScope (self: super: { Cabal = self.Cabal_3_0_0_0; });
+
   # https://github.com/tibbe/unordered-containers/issues/214
   unordered-containers = dontCheck super.unordered-containers;
 
@@ -88,4 +91,7 @@ self: super: {
     version = "0.8.6.0-pre-release";
   };
 
+  # Newer versions don't compile.
+  resolv = self.resolv_0_1_1_2;
+
 }