又搜了一下，vcpkg.json里针对某个包可以用"default-features": false来禁用其默认特性，然后把curl的openssl feature给列出即可。

  "dependencies": [
   {
      "name": "curl",
      "default-features": false,
      "features": [
        "openssl"
      ]
    },
--
FROM 114.241.228.*