Merge pull request grafana#42 from grafana/paul/post-build-message

Provide an end-of-build message

cmd/xk6/main.go

@@ -56,6 +56,7 @@ func main() {
 func runBuild(ctx context.Context, args []string) error {
 	// parse the command line args... rather primitively
 	var argK6Version, output string
+	var outputOverride bool
 	var extensions []xk6.Dependency
 	var replacements []xk6.Replace
 	for i := 0; i < len(args); i++ {
@@ -108,6 +109,7 @@ func runBuild(ctx context.Context, args []string) error {
 			}
 			i++
 			output = args[i]
+			outputOverride = true
 
 		default:
 			if argK6Version != "" {
@@ -160,6 +162,13 @@ func runBuild(ctx context.Context, args []string) error {
 		}
 	}
 
+	if !outputOverride {
+		path, _ := os.Getwd()
+		fmt.Println()
+		fmt.Println("xk6 has now produced a new k6 binary which may be different than the command on your system path!")
+		fmt.Printf("Be sure to run '%v run <SCRIPT_NAME>' from the '%v' directory.\n", output, path)
+	}
+
 	return nil
 }