fix build

Author: hellojukay

open.go

@@ -1,5 +1,5 @@
-//go:build !windows || !darwin
-// +build !windows !darwin
+//go:build linux
+// +build linux
 
 package main
 

open_darwin.go

@@ -3,6 +3,11 @@
 
 package main
 
+import (
+	"fmt"
+	"os/exec"
+)
+
 func Open(url string) error {
 	bin, err := exec.LookPath("open")
 	if err != nil {

open_windows.go

@@ -3,6 +3,12 @@
 
 package main
 
+import (
+	"fmt"
+	"os/exec"
+	"time"
+)
+
 // start up cmd.exe then run start command to open default browser
 func Open(url string) error {
 	bin, err := exec.LookPath("cmd")