Golang的“内部错误：重复加载”-如何解决此错误？

Question

I am new in go. I have used external package in my project. I have tried to the below command for getting all imported packages,

go get -v all

It will throw duplicate loads error. What is the problem of this. How can I resolve this error ?

go get -v all
internal error: duplicate loads of unsafe
internal error: duplicate loads of runtime
internal error: duplicate loads of errors
internal error: duplicate loads of sync/atomic
internal error: duplicate loads of sync
internal error: duplicate loads of io
internal error: duplicate loads of unicode
internal error: duplicate loads of unicode/utf8
internal error: duplicate loads of bytes
internal error: duplicate loads of bufio
internal error: duplicate loads of math
internal error: duplicate loads of strconv
internal error: duplicate loads of reflect
internal error: duplicate loads of encoding/binary
internal error: duplicate loads of syscall
internal error: duplicate loads of time
internal error: duplicate loads of os
internal error: duplicate loads of fmt
internal error: duplicate loads of sort
internal error: duplicate loads of strings
internal error: duplicate loads of path/filepath
internal error: duplicate loads of path

Answer 1

Do not use all as argument to go get. That's not how it works.

"all" ist special and means "the whole standard library" and you don't need (and cannot) go get the standard library (as it is part of your Go installation).

Take a close look at the documentation of the go tool, e.g. by go help or go help get. To get an external package foo/bar/baz use go get foo/bar/baz.

There is no (simple, newbie suitable) way to get all imported external packages. The most sensible way is to go get the/external/package and then use it in your code, not the other way around.