testsuite/tests/deriving/should_fail/T2851.stderr


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T2851.hs:9:15:
    No instance for (Show (F a))
      arising from the first field of ‘D’ (type ‘F a’)
    Possible fix:
      use a standalone 'deriving instance' declaration,
        so you can specify the instance context yourself
    When deriving the instance for (Show (D a))