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- $ cabal install web-encodings
- Resolving dependencies...
- Configuring failure-0.1.2...
- Preprocessing library failure-0.1.2...
- Building failure-0.1.2...
- [1 of 1] Compiling Control.Failure ( Control/Failure.hs, dist/build/Control/Failure.o )
- Control/Failure.hs:67:9:
- Could not deduce (Control.Monad.Trans.Error.Error e)
- from the context ()
- arising from the superclasses of an instance declaration
- at Control/Failure.hs:67:9-28
- Possible fix:
- add (Control.Monad.Trans.Error.Error e) to the context of
- the instance declaration
- In the instance declaration for `Failure e (Either e)'
- cabal: Error: some packages failed to install:
- failure-0.1.2 failed during the building phase. The exception was:
- ExitFailure 1
- web-encodings-0.3.0.9 depends on failure-0.1.2 which failed to install.
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