bkpfail26.stderr 857 Bytes
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[1 of 3] Processing p
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  [1 of 2] Compiling H[sig]           ( p/H.hsig, nothing )
  [2 of 2] Compiling M                ( p/M.hs, nothing )
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[2 of 3] Processing q
  Instantiating q
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  [1 of 1] Compiling H                ( q/H.hs, bkpfail26.out/q/H.o )
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[3 of 3] Processing r
  Instantiating r
  [1 of 1] Including p[H=q:H]
    Instantiating p[H=q:H]
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    [1 of 2] Compiling H[sig]           ( p/H.hsig, bkpfail26.out/p/p-D5Mg3foBSCrDbQDKH4WGSG/H.o )
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bkpfail26.bkp:15:9: error:
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    • Type constructor ‘T’ has conflicting definitions in the module
      and its hsig file
      Main module: type T a = [a]
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      Hsig file:  {- skolem -} data T a
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      Illegal parameterized type synonym in implementation of abstract data.
      (Try eta reducing your type synonym so that it is nullary.)
    • while checking that q:H implements signature H in p[H=q:H]