Resolving dependencies...
Downloading mancala-0.1...
Configuring mancala-0.1...
Building mancala-0.1...
ghc-pkg: cannot create: dist/package.conf.inplace already exists
Failed to install mancala-0.1
cabal: Error: some packages failed to install:
mancala-0.1 failed during the building phase. The exception was:
ExitFailure 1