| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/hashicorp/hcl/v2 | Package hcl contains the main modelling types and general utility functions for HCL. |
| github.com/hashicorp/hcl/v2/hclsyntax | Package hclsyntax contains the parser, AST, etc for HCL's native language, as opposed to the JSON variant. |
| github.com/zclconf/go-cty/cty | Package cty (pronounced see-tie) provides some infrastructure for a type system that might be useful for applications that need to represent configuration values provided by the user whose types are not known at compile time, particularly if the calling application also allows such values to be used in expressions. |