Related #1960

When I run dhall against a file with a lot of chained with statements, dhall 1.36.0 seems to choke while dhall 1.35.0 executes the file quickly.

I've created a reproduction repository here: https://github.com/ggilmore/dhall-performance-regression-example-with

Run dhall 1.35.0 with dhall --file=src/fast-1.35.0/fast.dhall - see that the command executes quickly

Run dhall 1.36.0 with dhall --file=src/slow-1.36.0/slow.dhall - see that the command never terminates