*** setup configure

Creating setup (and its parents)
/usr/local/bin/ghc --make Setup.lhs -o setup/setup -odir setup -hidir setup
[1 of 1] Compiling Main             ( Setup.lhs, setup/Main.o )

Setup.lhs:17:41:
    Couldn't match expected type `(Either
                                     Distribution.PackageDescription.GenericPackageDescription
                                     PackageDescription,
                                   Distribution.PackageDescription.HookedBuildInfo)'
           against inferred type `PackageDescription'
    In the second argument of `(.)', namely `addOptionalUnixDependency'
    In the `confHook' field of a record
    In the expression:
        hooks {confHook = confHook hooks . addOptionalUnixDependency}

Setup.lhs:23:46:
    Couldn't match expected type `Distribution.Package.PackageName'
           against inferred type `[Char]'
    In the first argument of `Dependency', namely `"unix"'
    In the first argument of `addDependency', namely
        `(Dependency "unix" AnyVersion)'
    In the expression:
        addDependency (Dependency "unix" AnyVersion) desc

*** Trying again with preferred-versions

*** setup configure

Creating setup (and its parents)
/usr/local/bin/ghc --make Setup.lhs -o setup/setup -odir setup -hidir setup
[1 of 1] Compiling Main             ( Setup.lhs, setup/Main.o )

Setup.lhs:17:41:
    Couldn't match expected type `(Either
                                     Distribution.PackageDescription.GenericPackageDescription
                                     PackageDescription,
                                   Distribution.PackageDescription.HookedBuildInfo)'
           against inferred type `PackageDescription'
    In the second argument of `(.)', namely `addOptionalUnixDependency'
    In the `confHook' field of a record
    In the expression:
        hooks {confHook = confHook hooks . addOptionalUnixDependency}

Setup.lhs:23:46:
    Couldn't match expected type `Distribution.Package.PackageName'
           against inferred type `[Char]'
    In the first argument of `Dependency', namely `"unix"'
    In the first argument of `addDependency', namely
        `(Dependency "unix" AnyVersion)'
    In the expression:
        addDependency (Dependency "unix" AnyVersion) desc