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-rw-r--r--pkgs/development/haskell-modules/configuration-hackage2nix.yaml2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
index 98689fb7a45d..d84e530d174f 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
@@ -38,6 +38,8 @@ core-packages:
   - ghcjs-base-0
 
 default-package-overrides:
+  # Newer versions require contravariant-1.5.*, which many builds refuse at the moment.
+  - base-compat-batteries ==0.10.1
   # LTS Haskell 11.16
   - abstract-deque ==0.3
   - abstract-deque-tests ==0.3