sublime 安装插件问题

新装sublime 不能安装插件

sublime -> preferences -> package settings -> package control -> user settings

{
  "bootstrapped": true,
  "debug": true,
  <增加开始>
  "downloader_precedence":
  {
    "linux":
    [
      "curl",
      "urllib",
      "wget"
    ],
    "osx":
    [
      "curl",
      "urllib"
    ],
    "windows":
    [
      "wininet"
    ]
  },
  <增加结束>
  "in_process_packages":
  [
  ],
  "installed_packages":
  [
    "MarkdownPreview",
    "Package Control"
  ]
}

原因: osx缺少 curl