Executable fails to build with `optparse-applicaitve >= 0.18`

[hololeap]

There are various errors, such as:

src/main/Main.hs:70:14: error:
    Not in scope: ‘PP.displayIO’
    Module ‘Options.Applicative.Help.Pretty’ does not export ‘displayIO’.
   |
70 |         then PP.displayIO stdout . PP.renderPretty 1.0 80 $
   |              ^^^^^^^^^^^^

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From the optparse-applicative changelog:

Move to prettyprinter library for pretty printing.

This is a potentially breaking change when one uses the *Doc family of functions (like headerDoc) from Options.Applicative. However, as versions of ansi-wl-pprint > 1.0 export a compatible Doc type, this can be mitigated by using a recent version.

One can also either import directly from Options.Applicative.Help or from the Prettyprinter module of prettyprinter.

---

Full build log: https://gist.github.com/hololeap/5df44b5ce636deade4e5985033296786

[ennocramer]

This problem has been addressed with floskell-0.11.0.