1 files changed, 4 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix b/nixpkgs/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
index 99b53b9f14f3..42fa603d3313 100644
--- a/nixpkgs/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
+++ b/nixpkgs/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
@@ -106,4 +106,8 @@ self: super: {
   # https://github.com/haskellari/time-compat/issues/23
   time-compat = dontCheck super.time-compat;
 
+  # hackage-db 2.1.1 is incompatible with Cabal < 3.4
+  # See https://github.com/NixOS/cabal2nix/issues/501
+  hackage-db = super.hackage-db_2_1_0;
+
 }