Imports of package envcmd

PathSynopsis
cmd/go/internal/basePackage base defines shared basic pieces of the go command, in particular logging and the Command structure.
cmd/go/internal/cachePackage cache implements a build artifact cache.
cmd/go/internal/cfgPackage cfg holds configuration shared by multiple parts of the go command.
cmd/go/internal/loadPackage load loads packages.
cmd/go/internal/modload
cmd/go/internal/work
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
go/buildPackage build gathers information about Go packages.
io/ioutilPackage ioutil implements some I/O utility functions.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
sortPackage sort provides primitives for sorting slices and user-defined collections.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
unicode/utf8Package utf8 implements functions and constants to support text encoded in UTF-8.