cmd/go: split out cmd/go/internal/clean,doc,fix,generate,list,run,tool,version,vet

This is one CL in a long sequence of changes to break up the
go command from one package into a plausible group of packages.

This sequence is concerned only with moving code, not changing
or cleaning up code. There will still be more cleanup after this sequence.

The entire sequence will be submitted together: it is not a goal
for the tree to build at every step.

For #18653.

Change-Id: Ib22fc435827d4a05a77a5200ac437ce00e2a4da3
Reviewed-on: https://go-review.googlesource.com/36204Reviewed-by: David Crawshaw <crawshaw@golang.org>

src/cmd/dist/deps.go

@@ -6,12 +6,26 @@ var builddeps = map[string][]string{
 	"bufio":                             {"bytes", "errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
 	"bytes":                             {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic", "unicode", "unicode/utf8"},
 	"cmd/go/internal/base":              {"bufio", "bytes", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/bug":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/env", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/buildid":           {"bufio", "bytes", "cmd/go/internal/cfg", "compress/flate", "compress/zlib", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/cfg":               {"bufio", "bytes", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/clean":             {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/doc":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/env":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/fix":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/fmt":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/generate":          {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/get":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "encoding/xml", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/help":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "encoding", "encoding/base64", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "html", "html/template", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/list":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/load":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/str", "compress/flate", "compress/zlib", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/run":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/str":               {"bytes", "errors", "fmt", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"cmd/go/internal/test":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/tool":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/version":           {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/cfg", "cmd/go/internal/str", "context", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/vet":               {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go/internal/web":               {"errors", "internal/race", "io", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sync", "sync/atomic"},
 	"cmd/go/internal/work":              {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/load", "cmd/go/internal/str", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding/binary", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"compress/flate":                    {"bufio", "bytes", "errors", "fmt", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"compress/zlib":                     {"bufio", "bytes", "compress/flate", "errors", "fmt", "hash", "hash/adler32", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
@@ -26,6 +40,7 @@ var builddeps = map[string][]string{
 	"encoding/base64":                   {"errors", "internal/race", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
 	"encoding/binary":                   {"errors", "internal/race", "io", "math", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "unicode/utf8"},
 	"encoding/json":                     {"bytes", "encoding", "encoding/base64", "errors", "fmt", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"encoding/xml":                      {"bufio", "bytes", "encoding", "errors", "fmt", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "strings", "sync", "sync/atomic", "syscall", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 	"errors":                            {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
 	"flag":                              {"errors", "fmt", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
 	"fmt":                               {"errors", "internal/race", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "math", "os", "reflect", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "strconv", "sync", "sync/atomic", "syscall", "time", "unicode/utf16", "unicode/utf8"},
@@ -72,5 +87,5 @@ var builddeps = map[string][]string{
 	"unicode":                 {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
 	"unicode/utf16":           {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
 	"unicode/utf8":            {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
-	"cmd/go":                  {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/help", "cmd/go/internal/load", "cmd/go/internal/str", "cmd/go/internal/test", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "html", "html/template", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
+	"cmd/go":                  {"bufio", "bytes", "cmd/go/internal/base", "cmd/go/internal/bug", "cmd/go/internal/buildid", "cmd/go/internal/cfg", "cmd/go/internal/clean", "cmd/go/internal/doc", "cmd/go/internal/env", "cmd/go/internal/fix", "cmd/go/internal/fmt", "cmd/go/internal/generate", "cmd/go/internal/get", "cmd/go/internal/help", "cmd/go/internal/list", "cmd/go/internal/load", "cmd/go/internal/run", "cmd/go/internal/str", "cmd/go/internal/test", "cmd/go/internal/tool", "cmd/go/internal/version", "cmd/go/internal/vet", "cmd/go/internal/web", "cmd/go/internal/work", "compress/flate", "compress/zlib", "container/heap", "context", "crypto", "crypto/sha1", "debug/dwarf", "debug/elf", "debug/macho", "encoding", "encoding/base64", "encoding/binary", "encoding/json", "encoding/xml", "errors", "flag", "fmt", "go/ast", "go/build", "go/doc", "go/parser", "go/scanner", "go/token", "hash", "hash/adler32", "html", "html/template", "internal/race", "internal/singleflight", "internal/syscall/windows", "internal/syscall/windows/registry", "internal/syscall/windows/sysdll", "io", "io/ioutil", "log", "math", "net/url", "os", "os/exec", "os/signal", "path", "path/filepath", "reflect", "regexp", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "syscall", "text/template", "text/template/parse", "time", "unicode", "unicode/utf16", "unicode/utf8"},
 }

src/cmd/go/clean.go → src/cmd/go/internal/clean/clean.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package clean
 
 import (
 	"fmt"
@@ -17,7 +17,7 @@ import (
 	"cmd/go/internal/work"
 )
 
-var cmdClean = &base.Command{
+var CmdClean = &base.Command{
 	UsageLine: "clean [-i] [-r] [-n] [-x] [build flags] [packages]",
 	Short:     "remove object files",
 	Long: `
@@ -68,15 +68,15 @@ var cleanR bool // clean -r flag
 
 func init() {
 	// break init cycle
-	cmdClean.Run = runClean
+	CmdClean.Run = runClean
 
-	cmdClean.Flag.BoolVar(&cleanI, "i", false, "")
-	cmdClean.Flag.BoolVar(&cleanR, "r", false, "")
+	CmdClean.Flag.BoolVar(&cleanI, "i", false, "")
+	CmdClean.Flag.BoolVar(&cleanR, "r", false, "")
 	// -n and -x are important enough to be
 	// mentioned explicitly in the docs but they
 	// are part of the build flags.
 
-	work.AddBuildFlags(cmdClean)
+	work.AddBuildFlags(CmdClean)
 }
 
 func runClean(cmd *base.Command, args []string) {

src/cmd/go/doc.go → src/cmd/go/internal/doc/doc.go

@@ -2,16 +2,14 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:generate ./mkalldocs.sh
-
-package main
+package doc
 
 import (
 	"cmd/go/internal/base"
 	"cmd/go/internal/cfg"
 )
 
-var cmdDoc = &base.Command{
+var CmdDoc = &base.Command{
 	Run:         runDoc,
 	UsageLine:   "doc [-u] [-c] [package|[package.]symbol[.method]]",
 	CustomFlags: true,

src/cmd/go/fix.go → src/cmd/go/internal/fix/fix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package fix
 
 import (
 	"cmd/go/internal/base"
@@ -11,7 +11,7 @@ import (
 	"cmd/go/internal/str"
 )
 
-var cmdFix = &base.Command{
+var CmdFix = &base.Command{
 	Run:       runFix,
 	UsageLine: "fix [packages]",
 	Short:     "run go tool fix on packages",

src/cmd/go/generate.go → src/cmd/go/internal/generate/generate.go

@@ -2,15 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package generate
 
 import (
 	"bufio"
 	"bytes"
-	"cmd/go/internal/base"
-	"cmd/go/internal/cfg"
-	"cmd/go/internal/load"
-	"cmd/go/internal/work"
 	"fmt"
 	"io"
 	"log"
@@ -20,9 +16,14 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+
+	"cmd/go/internal/base"
+	"cmd/go/internal/cfg"
+	"cmd/go/internal/load"
+	"cmd/go/internal/work"
 )
 
-var cmdGenerate = &base.Command{
+var CmdGenerate = &base.Command{
 	Run:       runGenerate,
 	UsageLine: "generate [-run regexp] [-n] [-v] [-x] [build flags] [file.go... | packages]",
 	Short:     "generate Go files by processing source",
@@ -135,8 +136,8 @@ var (
 )
 
 func init() {
-	work.AddBuildFlags(cmdGenerate)
-	cmdGenerate.Flag.StringVar(&generateRunFlag, "run", "", "")
+	work.AddBuildFlags(CmdGenerate)
+	CmdGenerate.Flag.StringVar(&generateRunFlag, "run", "", "")
 }
 
 func runGenerate(cmd *base.Command, args []string) {

src/cmd/go/generate_test.go → src/cmd/go/internal/generate/generate_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package generate
 
 import (
 	"reflect"

src/cmd/go/pkg_test.go → src/cmd/go/internal/get/pkg_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package get
 
 import (
 	"cmd/go/internal/load"

src/cmd/go/tag_test.go → src/cmd/go/internal/get/tag_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package get
 
 import "testing"
 

src/cmd/go/vcs_test.go → src/cmd/go/internal/get/vcs_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package get
 
 import (
 	"errors"

src/cmd/go/context.go → src/cmd/go/internal/list/context.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package list
 
 import (
 	"go/build"

src/cmd/go/list.go → src/cmd/go/internal/list/list.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package list
 
 import (
 	"bufio"
@@ -17,7 +17,7 @@ import (
 	"text/template"
 )
 
-var cmdList = &base.Command{
+var CmdList = &base.Command{
 	UsageLine: "list [-e] [-f format] [-json] [build flags] [packages]",
 	Short:     "list packages",
 	Long: `
@@ -140,13 +140,13 @@ For more about specifying packages, see 'go help packages'.
 }
 
 func init() {
-	cmdList.Run = runList // break init cycle
-	work.AddBuildFlags(cmdList)
+	CmdList.Run = runList // break init cycle
+	work.AddBuildFlags(CmdList)
 }
 
-var listE = cmdList.Flag.Bool("e", false, "")
-var listFmt = cmdList.Flag.String("f", "{{.ImportPath}}", "")
-var listJson = cmdList.Flag.Bool("json", false, "")
+var listE = CmdList.Flag.Bool("e", false, "")
+var listFmt = CmdList.Flag.String("f", "{{.ImportPath}}", "")
+var listJson = CmdList.Flag.Bool("json", false, "")
 var nl = []byte{'\n'}
 
 func runList(cmd *base.Command, args []string) {

src/cmd/go/run.go → src/cmd/go/internal/run/run.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package run
 
 import (
 	"fmt"
@@ -16,7 +16,7 @@ import (
 	"cmd/go/internal/work"
 )
 
-var cmdRun = &base.Command{
+var CmdRun = &base.Command{
 	UsageLine: "run [build flags] [-exec xprog] gofiles... [arguments...]",
 	Short:     "compile and run Go program",
 	Long: `
@@ -40,10 +40,10 @@ See also: go build.
 }
 
 func init() {
-	cmdRun.Run = runRun // break init loop
+	CmdRun.Run = runRun // break init loop
 
-	work.AddBuildFlags(cmdRun)
-	cmdRun.Flag.Var((*base.StringsFlag)(&work.ExecCmd), "exec", "")
+	work.AddBuildFlags(CmdRun)
+	CmdRun.Flag.Var((*base.StringsFlag)(&work.ExecCmd), "exec", "")
 }
 
 func printStderr(args ...interface{}) (int, error) {

src/cmd/go/tool.go → src/cmd/go/internal/tool/tool.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package tool
 
 import (
 	"fmt"
@@ -15,7 +15,7 @@ import (
 	"cmd/go/internal/cfg"
 )
 
-var cmdTool = &base.Command{
+var CmdTool = &base.Command{
 	Run:       runTool,
 	UsageLine: "tool [-n] command [args...]",
 	Short:     "run specified go tool",
@@ -33,7 +33,7 @@ For more about each tool command, see 'go tool command -h'.
 var toolN bool
 
 func init() {
-	cmdTool.Flag.BoolVar(&toolN, "n", false, "")
+	CmdTool.Flag.BoolVar(&toolN, "n", false, "")
 }
 
 func runTool(cmd *base.Command, args []string) {

src/cmd/go/version.go → src/cmd/go/internal/version/version.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package version
 
 import (
 	"cmd/go/internal/base"
@@ -10,7 +10,7 @@ import (
 	"runtime"
 )
 
-var cmdVersion = &base.Command{
+var CmdVersion = &base.Command{
 	Run:       runVersion,
 	UsageLine: "version",
 	Short:     "print Go version",

src/cmd/go/vet.go → src/cmd/go/internal/vet/vet.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package main
+package vet
 
 import (
 	"path/filepath"
@@ -15,10 +15,10 @@ import (
 )
 
 func init() {
-	work.AddBuildFlags(cmdVet)
+	work.AddBuildFlags(CmdVet)
 }
 
-var cmdVet = &base.Command{
+var CmdVet = &base.Command{
 	Run:       runVet,
 	UsageLine: "vet [-n] [-x] [build flags] [packages]",
 	Short:     "run go tool vet on packages",

src/cmd/go/main.go

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:generate ./mkalldocs.sh
+
 package main
 
 import (
@@ -16,32 +18,41 @@ import (
 	"cmd/go/internal/base"
 	"cmd/go/internal/bug"
 	"cmd/go/internal/cfg"
+	"cmd/go/internal/clean"
+	"cmd/go/internal/doc"
 	"cmd/go/internal/env"
+	"cmd/go/internal/fix"
 	fmtcmd "cmd/go/internal/fmt"
+	"cmd/go/internal/generate"
 	"cmd/go/internal/get"
 	"cmd/go/internal/help"
+	"cmd/go/internal/list"
+	"cmd/go/internal/run"
 	"cmd/go/internal/test"
+	"cmd/go/internal/tool"
+	"cmd/go/internal/version"
+	"cmd/go/internal/vet"
 	"cmd/go/internal/work"
 )
 
 func init() {
 	base.Commands = []*base.Command{
 		work.CmdBuild,
-		cmdClean,
-		cmdDoc,
+		clean.CmdClean,
+		doc.CmdDoc,
 		env.CmdEnv,
 		bug.CmdBug,
-		cmdFix,
+		fix.CmdFix,
 		fmtcmd.CmdFmt,
-		cmdGenerate,
+		generate.CmdGenerate,
 		get.CmdGet,
 		work.CmdInstall,
-		cmdList,
-		cmdRun,
+		list.CmdList,
+		run.CmdRun,
 		test.CmdTest,
-		cmdTool,
-		cmdVersion,
-		cmdVet,
+		tool.CmdTool,
+		version.CmdVersion,
+		vet.CmdVet,
 
 		help.HelpC,
 		help.HelpBuildmode,
@@ -130,8 +141,6 @@ func main() {
 	base.Exit()
 }
 
-var usage func()
-
 func init() {
 	base.Usage = mainUsage
 }