Bug#933533: FTBFS on x32 (due to optimize-gmp=False): Variable not in scope: unsafeShiftL :: t -> Integer -> t

[Laurence Parry]

In fact, as I was writing they released 0.2.2.0:
https://hackage.haskell.org/package/cborg
https://github.com/well-typed/cborg/commit/992b730ca6fd9c1da191bfecb2b67cabf31b54ad
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* Support GHC built with integer-simple
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-- 
Laurence "GreenReaper" Parry
http://www.greenreaper.co.uk/