refactor: move back the main at the root of the package

Makefile

@@ -1,6 +1,6 @@
 .PHONY: install
 install:
-	GO111MODULE=on go build -v -o $(GOPATH)/bin/depviz ./cmd/...
+	GO111MODULE=on go install -v
 
 .PHONY: test
 test:

README.md

@@ -50,8 +50,7 @@ _inspired by this discussion: [jbenet/random-ideas#37](https://github.com/jbenet
 
 ```
 go get moul.io/depviz
-make
-````
+```
 
 ## Usage
 

cmd/chi_util.go → cli/chi_util.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"net/http"

cmd/cmd_airtable.go → cli/cmd_airtable.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"encoding/json"

cmd/cmd_db.go → cli/cmd_db.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"encoding/json"

cmd/cmd_graph.go → cli/cmd_graph.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"encoding/json"

cmd/cmd_pull.go → cli/cmd_pull.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"encoding/json"

cmd/cmd_run.go → cli/cmd_run.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"encoding/json"

cmd/cmd_web.go → cli/cmd_web.go

@@ -1,4 +1,4 @@
-package main
+package cli
 
 import (
 	"bytes"

cmd/main.go → cli/root.go

@@ -1,14 +1,12 @@
-package main
+package cli // import "moul.io/depviz/cli"
 
 import (
-	"fmt"
 	"io/ioutil"
 	"log"
 	"os"
 	"strings"
 
 	"github.com/jinzhu/gorm"
-	_ "github.com/mattn/go-sqlite3"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -19,15 +17,6 @@ import (
 	"moul.io/zapgorm"
 )
 
-func main() {
-	defer zap.L().Sync()
-	rootCmd := newRootCommand()
-	if err := rootCmd.Execute(); err != nil {
-		_, _ = fmt.Fprintf(os.Stderr, "%v\n", err)
-		os.Exit(1)
-	}
-}
-
 var (
 	verbose bool
 	cfgFile string
@@ -47,7 +36,7 @@ type DepvizCommand interface {
 	ParseFlags(*pflag.FlagSet)
 }
 
-func newRootCommand() *cobra.Command {
+func NewRootCommand() *cobra.Command {
 	rootCmd := &cobra.Command{
 		Use: "depviz",
 	}

main.go

@@ -0,0 +1,19 @@
+package main // import "moul.io/depviz"
+
+import (
+	"fmt"
+	"os"
+
+	_ "github.com/mattn/go-sqlite3"
+	"go.uber.org/zap"
+	"moul.io/depviz/cli"
+)
+
+func main() {
+	defer zap.L().Sync()
+	rootCmd := cli.NewRootCommand()
+	if err := rootCmd.Execute(); err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}