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+This package includes backported versions of types that were added to
+transformers in transformers 0.3 and 0.4 for users who need strict
+transformers 0.2 or 0.3 compatibility to run on old versions of the
+platform, but also need those types.
+
+After uninstalling, run this command to unregister the package from
+the ghc package database: ghc-pkg recache