Fix build failures - #2

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neilmayhew wants to merge 3 commits into

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Commits on May 18, 2020

Update for wl-pprint-text 1.2
neilmayhew
committed
eebb771
Fix haddock error
neilmayhew
committed
ed19f33
Update for Stackage LTS 15
neilmayhew
committed
05b90a8