x/tools/cmd/goimports: Feature Request --> coalesce import groups

[nmiculinic]

What version of Go are you using (go version)?

$ go version
go version go1.13.4 linux/amd64

Does this issue reproduce with the latest release?

YES

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/nmiculinic/.cache/go-build"
GOENV="/home/nmiculinic/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/nmiculinic/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/lib/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/nmiculinic/Desktop/kubecarrier/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build238528765=/tmp/go-build -gno-record-gcc-switches"

What did you do?

I have the following file:

package framework

import (
	"bytes"
	"fmt"
	"os"
	"os/exec"
	"strings"
	"testing"

	aaa "local"

	"github.com/stretchr/testify/require"

	"k8s.io/apimachinery/pkg/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	restclient "k8s.io/client-go/rest"
	"k8s.io/client-go/tools/clientcmd"
	"sigs.k8s.io/controller-runtime/pkg/client"

	ggg "local/ddd"
	zzz "local/zzz"
)

And after running goimports -local local -w <filename>.go it doesn't sort the import properly. I'd expect some input group coalescing:

What did you expect to see?

package framework

import (
	"bytes"
	"fmt"
	"os"
	"os/exec"
	"strings"
	"testing"

	"github.com/stretchr/testify/require"
	"k8s.io/apimachinery/pkg/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	restclient "k8s.io/client-go/rest"
	"k8s.io/client-go/tools/clientcmd"
	"sigs.k8s.io/controller-runtime/pkg/client"

	aaa "local"
	ggg "local/ddd"
	zzz "local/zzz"
)

What did you see instead?

It remained the same.

I've tried fixing it; and making a PR....but got bunch of failing tests without really understanding why or what is happening:

0001-Trying-to-add-this-feature.txt

[heschi]

We can't look at patches in issues, sorry.

Closing as a dupe of #20818. Please comment if you disagree.