Sublime Text 3 安装包失败，提示 Host codeload.github.com returned an invalid certificate

这个错误呢，有多种多样，不过一般的报错如下

environment variables loaded using: /bin/bash -l
Package Control: Skipping automatic upgrade, last run at 2019-04-09 14:43:45, next run at 2019-04-09 15:43:45 or after
no command for selector: noop:
reloading settings Packages/User/Package Control.sublime-settings
Package Control: Fetching list of available packages and dependencies
  Platform: osx-x64
  Sublime Text Version: 3132
  Package Control Version: 3.3.0
Package Control: Download Debug
  URL: https://raw.githubusercontent.com/SuCicada/channel_v3.json/master/channel_v3.json
  Timeout: 30
  Resolved IP: 151.101.108.133
  Resolved IPv6: ::ffff:151.101.108.133
Package Control: Urllib Debug Proxy
  http_proxy: 
  https_proxy: 
  proxy_username: 
  proxy_password: 
Package Control: Found previously exported CA bundle at /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/oscrypto-ca-bundle.crt (267421 bytes)
Package Control: Urllib HTTPS Debug General
  Connecting to raw.githubusercontent.com on port 443
Package Control: Urllib HTTPS Debug General
  Upgrading connection to SSL using CA certs file at /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/Package Control.merged-ca-bundle
  Using hostname "raw.githubusercontent.com" for TLS SNI extension
  Successfully upgraded connection to raw.githubusercontent.com:443 with SSL Using TLSv1/SSLv3 with cipher ECDHE-RSA-AES128-SHA
  Server SSL certificate:
    subject: CN=www.github.com,O=GitHub, Inc.,L=San Francisco,S=California,C=US
    subject alt name: www.github.com, *.github.com, github.com, *.github.io, github.io, *.githubusercontent.com, githubusercontent.com
    expire date: May 13 12:00:00 2020 GMT
  Certificate validated for raw.githubusercontent.com
Package Control: Urllib HTTPS Debug Write
  GET /SuCicada/channel_v3.json/master/channel_v3.json HTTP/1.1
  Accept-Encoding: bzip2,gzip,deflate
  User-Agent: Package Control v3.3.0
  Host: raw.githubusercontent.com
  Connection: Keep-Alive
Package Control: Urllib HTTPS Debug Read
  HTTP/1.1 200 OK
  Content-Security-Policy: default-src 'none'; style-src 'unsafe-inline'; sandbox
  Strict-Transport-Security: max-age=31536000
  X-Content-Type-Options: nosniff
  X-Frame-Options: deny
  X-XSS-Protection: 1; mode=block
  ETag: "0e0bbf794fcc277a62768d904cce4b6af959fd29"
  Content-Type: text/plain; charset=utf-8
  Cache-Control: max-age=300
  X-Geo-Block-List: 
  X-GitHub-Request-Id: 9620:4DD9:1F0EF4:216A84:5CAC3F12
  Content-Encoding: gzip
  Content-Length: 497363
  Accept-Ranges: bytes
  Date: Tue, 09 Apr 2019 06:45:46 GMT
  Via: 1.1 varnish
  Connection: keep-alive
  X-Served-By: cache-tyo19929-TYO
  X-Cache: HIT
  X-Cache-Hits: 1
  X-Timer: S1554792347.798530,VS0,VE0
  Vary: Authorization,Accept-Encoding
  Access-Control-Allow-Origin: *
  X-Fastly-Request-ID: 8cda0d07b737d965739d99bf745efbd2daa01660
  Expires: Tue, 09 Apr 2019 06:50:46 GMT
  Source-Age: 135
Package Control: Caching https://raw.githubusercontent.com/SuCicada/channel_v3.json/master/channel_v3.json in /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/Package Control.cache/0237eec831c44655eb2369f01408da2c
Package Control: Urllib HTTPS Debug General
  Closing connection to raw.githubusercontent.com on port 443 after 1 request
ignored packages updated to: ["Vintage", "Vue Syntax Highlight"]
reloading settings Packages/User/Package Control.sublime-settings
Package Control: Fetching list of available packages and dependencies
  Platform: osx-x64
  Sublime Text Version: 3132
  Package Control Version: 3.3.0
Package Control: Download Debug
  URL: https://codeload.github.com/vuejs/vue-syntax-highlight/zip/oldsyntax-3.2.5
  Timeout: 30
  Resolved IP: 54.251.140.56
  Resolved IPv6: ::ffff:54.251.140.56
Package Control: Urllib Debug Proxy
  http_proxy: 
  https_proxy: 
  proxy_username: 
  proxy_password: 
Package Control: Found previously exported CA bundle at /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/oscrypto-ca-bundle.crt (267421 bytes)
Package Control: Urllib HTTPS Debug General
  Connecting to codeload.github.com on port 443
reloading settings Packages/User/Preferences.sublime-settings
reloading /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/Package Control.sublime-settings
Package Control: Urllib HTTPS Debug General
  Upgrading connection to SSL using CA certs file at /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/Package Control.merged-ca-bundle
  Using hostname "codeload.github.com" for TLS SNI extension
Package Control: Error downloading package. HTTP exception InvalidCertificateException (Host codeload.github.com returned an invalid certificate ([SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:548))) downloading https://codeload.github.com/vuejs/vue-syntax-highlight/zip/oldsyntax-3.2.5.
error: Package Control

Unable to download Vue Syntax Highlight. Please view the console for more details.
ignored packages updated to: ["Vintage"]
reloading /Users/xiaojiabin/Library/Application Support/Sublime Text 3/Packages/User/Package Control.sublime-settings
reloading settings Packages/User/Package Control.sublime-settings
reloading settings Packages/User/Preferences.sublime-settings
reloading settings Packages/User/Preferences.sublime-settings

这个错误产生的原因是我们的 Python 的 SSL 错误所致

修复方式有两种

把 "Preferences -> Package Settings -> Package Control -> Settings Default" 中的 "channels" 改成如下

    "downloader_precedence":
    {
        "linux": [ "curl", "urllib",    "wget" ],
        "osx": [ "curl", "urllib" ],
        "windows": [ "wininet" ]
    },

当然了，这是不友好的，对吧。请看第二种

在 "Preferences -> Package Settings -> Package Control -> Settings User" 中新添加一个项 "channels"

    "downloader_precedence":
    {
        "linux": [ "curl", "urllib",    "wget" ],
        "osx": [ "curl", "urllib" ],
        "windows": [ "wininet" ]
    },