MissingFileError "/root/.aws/credentials"

This is a direct result of this issue with Amazonka: brendanhay/amazonka#271

I'm not sure if there's anything we can do to mitigate it. A temporary hack involves putting the following into your deployment scripts ahead of calls to evaporate:

# hack needed until https://github.com/brendanhay/amazonka/issues/271 is fixed
printf "xxx.xxx.xxx.xxx\tinstance-data\n" | sudo tee -a /etc/hosts

[davidporter-id-au]

Trying to deploy from an instance in ap-southeast-2 and while this trick works for deploying in the local AZ, it doesn't appear to when deploying to us-west-2. :(