Handle if "binary" flag is not set (is empty)

Set `kustomize` as default

cmd/kustomize.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"cmp"
 	"fmt"
 	"os/exec"
 
@@ -25,10 +26,8 @@ var kustomizeCmd = &cobra.Command{
 	},
 	Long: `Generate a DOT file to visualize the dependencies between your kustomize components`,
 	RunE: func(cmd *cobra.Command, args []string) error {
-		kustomizeCmd := "kustomize"
-		if *binary != "" {
-			kustomizeCmd = *binary
-		}
+
+		kustomizeCmd := cmp.Or(*binary, "kustomize")
 
 		if *version {
 			kustomizeCmd := exec.CommandContext(cmd.Context(), kustomizeCmd, "version")

cmd/kustomize/build.go

@@ -1,6 +1,8 @@
 package kustomize
 
 import (
+	"cmp"
+
 	"github.com/puzzle/goff/kustomize"
 
 	"github.com/spf13/cobra"
@@ -24,6 +26,9 @@ var KustomizeBuildCmd = &cobra.Command{
 		if err != nil {
 			return err
 		}
+
+		kustomizeCommand = cmp.Or(kustomizeCommand, "kustomize")
+
 		return kustomize.BuildAll(kustomizeCommand, args[0], *outputBuildDir)
 	},
 }