How to import an internal package?

Question

go

There is a package: https://godoc.org/golang.org/x/tools/internal/semver
I want to use it.

import (
  "encoding/json"
  "fmt"
  "golang.org/x/tools/internal/semver"
)
...

Naturally I get:

***\app.go:6:2: use of internal package golang.org/x/tools/internal/semver not allowed

GOPATH is globally defined as C:\Users\NameUser\go

Everything is in place. But what kind of hedgehog is not connected?
PS

import (
  "encoding/json"
  "fmt"
  "golang.org/x/tools"
)
...

When I do this, I can't figure out how to use semver.

Answer 1

It's hard to learn Go... not all things seem obvious...
In general, there is magic: https://godoc.org/-/subrepo
NAKUYA?!?! I do not know. Why create 2 repositories, I xs ?! But that's how it works. Many other things in Go seem strange to me - more precisely, their implementation.