| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| gocloud.dev/blob | Package blob provides an easy and portable way to interact with blobs within a storage location. |
| gocloud.dev/gcerrors | Package gcerrors provides support for getting error codes from errors returned by Go CDK APIs. |
| gocloud.dev/runtimevar | Package runtimevar provides an easy and portable way to watch runtime configuration variables. |
| gocloud.dev/runtimevar/driver | Package driver defines interfaces to be implemented by runtimevar drivers, which will be used by the runtimevar package to interact with the underlying services. |
| net/url | Package url parses URLs and implements query escaping. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| path | Package path implements utility routines for manipulating slash-separated paths. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |