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

[Clint Adams]

On Wed, Jul 31, 2019 at 10:29:56AM +0100, Laurence Parry wrote:
> The issue appears to have been reported upstream as
> "cborg fails to compile when optimize-gmp is disabled"
> https://github.com/well-typed/cborg/issues/193

Patch applied, but I'm curious as to why optimize-gmp is False.