testsuite/tests/polykinds/T14580.stderr


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T14580.hs:8:31: error:
    • Expected kind ‘Cat a’, but ‘(iso :: cat a b)’ has kind ‘cat a b’
    • In the first argument of ‘ISO’, namely ‘(iso :: cat a b)’
      In the type ‘ISO (iso :: cat a b)’
      In the type declaration for ‘<-->’