using cabal; came accross this error.
did cabal install and this happened.
failed during the building phase. The exception was: ExitFailure 1
checked my log; it said:
dist/package.conf.inplace: inappropriate type
I have 0 ideas what's going on. cabal build works though. #STRANGE
CURRENTLY:
CABAL version: 1.22.0.0. Glorious Glasgow Haskell Compilation version: 7.8.4
Possible explanation: you have upgraded GHC to 7.10, which does things a bit differently I gather, but not upgraded cabal-install. If this is the problem, running
cabal install cabal-install -w ghc-7.8.4 # or whatever other version of GHC you have
may fix the problem.
You can get this error if you previously built your package with an older (or newer) version of Cabal and now are building with a newer (or older) version.
Not enough information to determine whether this is the problem in your case.
If it is, I think cabal clean should fix it (though I usually just rm -rf dist).
来源：https://stackoverflow.com/questions/29837198/macosx-cabal-install-built-failed-during-the-building-phase-the-exception-wa