If no type annotation is given, debugging errors gets a lot harder
because there is nothing to compare it against.
But we can tell dhall to print the type first (this means double
evaluation, but that’s an optimization problem to be solved later).
Change-Id: Icf793828070cd6bb8daeb4c07de3162a5e064653
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5525
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
f0e52f31cd
