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[1 of 2] Processing p
[1 of 1] Compiling ShouldFail[sig] ( p/ShouldFail.hsig, nothing )
[2 of 2] Processing q
Instantiating q
[1 of 1] Including p[ShouldFail=base-4.10.0.0:Prelude]
Instantiating p[ShouldFail=base-4.10.0.0:Prelude]
[1 of 1] Compiling ShouldFail[sig] ( p/ShouldFail.hsig, bkpfail17.out/p/p-2W6J7O3LvroH97zGxbPEGF/ShouldFail.o )
<no location info>: error:
• Type constructor ‘Either’ has conflicting definitions in the module
and its hsig file
Main module: data Either a b = Left a | Right b
Hsig file: type role Either representational phantom phantom
data Either a b c = Left a
The types have different kinds
• while checking that Prelude implements signature ShouldFail in p[ShouldFail=Prelude]
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