| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| gioui.org/gpu/internal/driver | |
| gioui.org/internal/byteslice | Package byteslice provides byte slice views of other Go values such as slices and structs. |
| gioui.org/internal/gl | |
| gioui.org/shader | |
| image | Package image implements a basic 2-D image library. |
| math/bits | Package bits implements bit counting and manipulation functions for the predeclared unsigned integer types. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| time | Package time provides functionality for measuring and displaying time. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |