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-rw-r--r--libraries/base/base.cabal3
1 files changed, 3 insertions, 0 deletions
diff --git a/libraries/base/base.cabal b/libraries/base/base.cabal
index 6da95b070f..905bc49471 100644
--- a/libraries/base/base.cabal
+++ b/libraries/base/base.cabal
@@ -398,3 +398,6 @@ Library
-- We need to set the unit id to base (without a version number)
-- as it's magic.
ghc-options: -this-unit-id base
+
+ -- Make sure we don't accidentally regress into anti-patterns
+ ghc-options: -Wcompat -Wnoncanonical-monad-instances