HCL is Hashicorp Configuration Language: https://github.com/hashicorp/hcl https://github.com/hashicorp/hcl. It's basically a DSL used by a bunch of Hashicorp p

HCL is Hashicorp Configuration Language: https://github.com/hashicorp/hcl https://github.com/hashicorp/hcl. It's basically a DSL used by a bunch of Hashicorp products. It's sort of a programming language. Someone I worked with implemented 1 or 2 advent of code exercises with it a couple of years ago, but it's far from a general purpose language.