goimports grouping/ordering problem

As you can see on this issue golang/go#20818, goimports has a problem about grouping/ordering import lines.
But we have to determine several specifications to resolve this problem, and a lot of people have been discussing for about 4 years on the issue.

An example solution

https://github.com/rinchsan/gosimports

A tool named gosimports provides one example solution for the issue.
gosimports stands for "simpler goimports", putting "s" between "go" and "imports" of "goimports".

What gosimports does

When you have a file like this:

package main

import (
    "fmt"

    "golang.org/x/sync/errgroup"
    "context"
)

func main() {
    fmt.Println(errgroup.WithContext(context.Background()))
}

gosimports will re-group and re-order import lines like below:

package main

import (
    "context"
    "fmt"

    "golang.org/x/sync/errgroup"
)

func main() {
    fmt.Println(errgroup.WithContext(context.Background()))
}

while original goimports does not.