HIL (HashiCorp Interpolation Language) is a lightweight embedded language used
primarily for configuration interpolation. The goal of HIL is to make a simple
language for interpolations in the various configurations of HashiCorp tools.
HIL is built to interpolate any string, but is in use by HashiCorp primarily
with HCL. HCL is not required in any way for use with HIL.
HIL isn't meant to be a general purpose language. It was built for basic
configuration interpolations. Therefore, you can't currently write functions,
have conditionals, set intermediary variables, etc. within HIL itself. It is
possible some of these may be added later but the right use case must exist.
