| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| 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. |
| github.com/zclconf/go-cty/cty/function | Package function builds on the functionality of cty by modeling functions that operate on cty Values. |
| log | Package log implements a simple logging package. |
| net/url | Package url parses URLs and implements query escaping. |
| unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |