Remote->Remote import chaining

[klardotsh]

Looks like this is known (by way of TODO) in the source to not work, but I wanted to file an issue if for no reason other than to note that someone is interested in this being implemented :)

I/we use serde_dhall in https://gitlab.com/logixboard/kachess. In v0.9.1 it imported Prelude.Map by HTTPS (which was unused in our downstream application, so not caught in testing, heh), but it looks like I'll have to vendor it for now based on this bit of dhall-rust's source and the error I got:

Type error: error: error
  --> <current file>:6:7
   |
 1 | -- <redacted>
 2 | --
 3 | -- <redacted>
 4 | -- <redacted>
...
19 |       --https://gitlab.com/logixboard/kachess/-/raw/v0.9.1/schema.dhall sha256:cb4d244fbcb7c1ca8aecab9bac6e9142118b950a33ada6801eac1b7cb261249f
20 |       https://gitlab.com/logixboard/kachess/-/raw/632155640ed7f0634abb1699b26aa20b75b75fba/schema.dhall
   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ SanityCheck
   |
make: *** [Makefile:17: deploy-functions] Error 1

Indeed, in v0.9.2, the SanityCheck error goes away.

[Nadrieril]

Thanks for the report :) This is being worked on as we speak: #214