如何避免n-n关系中的“导入周期”

Question

A role has many accounts and an account has many roles.

How to simulate that avoiding the import cycle?

Inside my $GOROOT

sandbox/
├── hello-world.go
├── orm
│   ├── main
│   │   └── main.go
│   └── model
│       ├── account
│       │   └── account.go
│       └── role
│           └── role.go

cat sandbox/orm/main/main.go

package main

import (
    "sandbox/orm/model/account"
)

func main() {

    a := account.Account
}

cat sandbox/orm/model/account/account.go

package account

import (
    "sandbox/orm/model/role"
)

type Account struct {
    id    int
    roles []role.Role
}

cat sandbox/orm/model/role/role.go

package role

import (
    "sandbox/orm/model/account"
)

type Account struct {
    id    int
    roles []role.Role
}

Answer 1

This is addressed in "Cyclic dependencies and interfaces in golang", in particular:

Replace import-requiring object types in APIs with basic types and interface.

Or put them in the same package.

I showed an example in "“Mutual” package import in Golang".