reset link goctl (#1232)

tools/goctl/rpc/generator/defaultgenerator.go

@@ -1,11 +1,9 @@
 package generator
 
 import (
-	"fmt"
-	"runtime"
+	"os/exec"
 
 	"github.com/tal-tech/go-zero/tools/goctl/util/console"
-	"github.com/tal-tech/go-zero/tools/goctl/util/env"
 )
 
 // DefaultGenerator defines the environment needs of rpc service generation
@@ -27,24 +25,17 @@ func NewDefaultGenerator() Generator {
 // Prepare provides environment detection generated by rpc service,
 // including go environment, protoc, whether protoc-gen-go is installed or not
 func (g *DefaultGenerator) Prepare() error {
-	if !env.CanExec() {
-		return fmt.Errorf("%s: can not start new processes using os.StartProcess or exec.Command", runtime.GOOS)
-	}
-
-	if _, err := env.LookUpGo(); err != nil {
+	_, err := exec.LookPath("go")
+	if err != nil {
 		return err
 	}
 
-	if _, err := env.LookUpProtoc(); err != nil {
+	_, err = exec.LookPath("protoc")
+	if err != nil {
 		return err
 	}
 
-	_, err := env.LookUpProtocGenGoctl()
-	if err == nil {
-		return nil
-	}
+	_, err = exec.LookPath("protoc-gen-go")
 
-	g.log.Warning("%+v", err)
-	_, err = env.LookUpProtocGenGo()
 	return err
 }