testsuite/tests/module/mod43.stderr


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mod43.hs:3:10:
    Illegal instance declaration for ‛Eq String’
      (All instance types must be of the form (T t1 ... tn)
       where T is not a synonym.
       Use -XTypeSynonymInstances if you want to disable this.)
    In the instance declaration for ‛Eq String’