testsuite/tests/typecheck/should_fail/tcfail184.stderr


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tcfail184.hs:9:19: error:
    • Illegal polymorphic type: forall a. Ord a => [a] -> [a]
      Perhaps you intended to use RankNTypes
    • In the definition of data constructor ‘MkSwizzle’
      In the newtype declaration for ‘Swizzle’