infra(magefile): add version directive

magefile.go

@@ -3,17 +3,32 @@
 package main
 
 import (
+	"fmt"
+
 	"github.com/magefile/mage/sh"
 )
 
-func Install() error {
-	version, err := sh.Output("git", "describe", "--tags", "--abbrev=0")
+func Install() (err error) {
+	version, err := version()
 	if err != nil {
-		return err
+		return
 	}
-	_, err = sh.Output("go", "install", "-ldflags", "-X main.version="+version)
+	_, err = sh.Output(
+		"go", "install",
+		"-ldflags", "-w -s -X main.version="+version,
+	)
+	return
+}
+
+func Version() error {
+	version, err := version()
 	if err != nil {
 		return err
 	}
+	fmt.Println(version)
 	return nil
 }
+
+func version() (string, error) {
+	return sh.Output("git", "describe", "--tags", "--abbrev=0")
+}