| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/go-cmp/cmp | Package cmp determines equality of values. |
| 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. |
| reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |