don't know how to reverse -XSafe
ghc-stage2: <no location info>: Incompatible Safe Haskell flags! (Safe, Trustworthy)
Usage: For basic information, try the `--help' option.
don't know how to reverse -XTrustworthy
ghc-stage2: <no location info>: Incompatible Safe Haskell flags! (Safe, Unsafe)
Usage: For basic information, try the `--help' option.
don't know how to reverse -XUnsafe