如何使用 curl 与 hackage API 交互？
How do I interact with the hackage API using curl?
有稀疏记录的方法here. This page just mentions there's an API, and links to the hackage-security 库，我花了 5 分钟四处探索并不能帮助我弄清楚如何形成对（哪个？）服务器的 http 请求
下面只是给我一个存根 html 文件：
$ curl -H "Accept: application/json" hackage.org/package/aeson/
$ curl -H "Accept: application/json" hackage.org/api/package/aeson/
旧相关：Does Hackage have an API?
你的基础 URL 错了。这是 https://hackage.haskell.org/.
curl -H 'Accept: application/json' https://hackage.haskell.org/package/aeson
产生输出
{"0.1.0.0":"normal","0.10.0.0":"deprecated","0.11.0.0":"normal","0.11.1.0":"normal","0.11.1.1":"normal","0.11.1.2":"normal","0.11.1.3":"normal","0.11.1.4":"normal","0.11.2.0":"normal","0.11.2.1":"normal","0.11.3.0":"normal","0.2.0.0":"normal","0.3.0.0":"normal","0.3.1.0":"normal","0.3.1.1":"normal","0.3.2.0":"normal","0.3.2.1":"normal","0.3.2.10":"normal","0.3.2.11":"normal","0.3.2.12":"normal","0.3.2.13":"normal","0.3.2.14":"normal","0.3.2.2":"normal","0.3.2.3":"normal","0.3.2.4":"normal","0.3.2.5":"normal","0.3.2.6":"normal","0.3.2.7":"normal","0.3.2.8":"normal","0.3.2.9":"normal","0.4.0.0":"normal","0.4.0.1":"normal","0.5.0.0":"normal","0.6.0.0":"normal","0.6.0.1":"normal","0.6.0.2":"normal","0.6.1.0":"normal","0.6.2.0":"normal","0.6.2.1":"normal","0.7.0.0":"deprecated","0.7.0.1":"deprecated","0.7.0.2":"deprecated","0.7.0.3":"deprecated","0.7.0.4":"normal","0.7.0.5":"deprecated","0.7.0.6":"normal","0.8.0.0":"deprecated","0.8.0.1":"deprecated","0.8.0.2":"normal","0.8.1.0":"normal","0.8.1.1":"normal","0.9.0.0":"normal","0.9.0.1":"normal","1.0.0.0":"normal","1.0.1.0":"normal","1.0.2.0":"normal","1.0.2.1":"normal","1.1.0.0":"normal","1.1.1.0":"normal","1.1.2.0":"normal","1.2.0.0":"normal","1.2.1.0":"normal","1.2.2.0":"normal","1.2.3.0":"normal","1.2.4.0":"normal","1.3.0.0":"normal","1.3.1.0":"normal","1.3.1.1":"normal","1.4.0.0":"normal","1.4.1.0":"normal","1.4.2.0":"normal","1.4.3.0":"normal","1.4.4.0":"normal","1.4.5.0":"normal","1.4.6.0":"normal","1.4.7.0":"normal","1.4.7.1":"normal","1.5.0.0":"normal","1.5.1.0":"normal","1.5.2.0":"normal","1.5.3.0":"normal","1.5.4.0":"normal","1.5.4.1":"normal","1.5.5.0":"normal","1.5.5.1":"normal","1.5.6.0":"normal","2.0.0.0":"normal","2.0.1.0":"normal","2.0.2.0":"normal","2.0.3.0":"normal"}
有稀疏记录的方法here. This page just mentions there's an API, and links to the hackage-security 库，我花了 5 分钟四处探索并不能帮助我弄清楚如何形成对（哪个？）服务器的 http 请求
下面只是给我一个存根 html 文件：
$ curl -H "Accept: application/json" hackage.org/package/aeson/
$ curl -H "Accept: application/json" hackage.org/api/package/aeson/
旧相关：Does Hackage have an API?
你的基础 URL 错了。这是 https://hackage.haskell.org/.
curl -H 'Accept: application/json' https://hackage.haskell.org/package/aeson
产生输出
{"0.1.0.0":"normal","0.10.0.0":"deprecated","0.11.0.0":"normal","0.11.1.0":"normal","0.11.1.1":"normal","0.11.1.2":"normal","0.11.1.3":"normal","0.11.1.4":"normal","0.11.2.0":"normal","0.11.2.1":"normal","0.11.3.0":"normal","0.2.0.0":"normal","0.3.0.0":"normal","0.3.1.0":"normal","0.3.1.1":"normal","0.3.2.0":"normal","0.3.2.1":"normal","0.3.2.10":"normal","0.3.2.11":"normal","0.3.2.12":"normal","0.3.2.13":"normal","0.3.2.14":"normal","0.3.2.2":"normal","0.3.2.3":"normal","0.3.2.4":"normal","0.3.2.5":"normal","0.3.2.6":"normal","0.3.2.7":"normal","0.3.2.8":"normal","0.3.2.9":"normal","0.4.0.0":"normal","0.4.0.1":"normal","0.5.0.0":"normal","0.6.0.0":"normal","0.6.0.1":"normal","0.6.0.2":"normal","0.6.1.0":"normal","0.6.2.0":"normal","0.6.2.1":"normal","0.7.0.0":"deprecated","0.7.0.1":"deprecated","0.7.0.2":"deprecated","0.7.0.3":"deprecated","0.7.0.4":"normal","0.7.0.5":"deprecated","0.7.0.6":"normal","0.8.0.0":"deprecated","0.8.0.1":"deprecated","0.8.0.2":"normal","0.8.1.0":"normal","0.8.1.1":"normal","0.9.0.0":"normal","0.9.0.1":"normal","1.0.0.0":"normal","1.0.1.0":"normal","1.0.2.0":"normal","1.0.2.1":"normal","1.1.0.0":"normal","1.1.1.0":"normal","1.1.2.0":"normal","1.2.0.0":"normal","1.2.1.0":"normal","1.2.2.0":"normal","1.2.3.0":"normal","1.2.4.0":"normal","1.3.0.0":"normal","1.3.1.0":"normal","1.3.1.1":"normal","1.4.0.0":"normal","1.4.1.0":"normal","1.4.2.0":"normal","1.4.3.0":"normal","1.4.4.0":"normal","1.4.5.0":"normal","1.4.6.0":"normal","1.4.7.0":"normal","1.4.7.1":"normal","1.5.0.0":"normal","1.5.1.0":"normal","1.5.2.0":"normal","1.5.3.0":"normal","1.5.4.0":"normal","1.5.4.1":"normal","1.5.5.0":"normal","1.5.5.1":"normal","1.5.6.0":"normal","2.0.0.0":"normal","2.0.1.0":"normal","2.0.2.0":"normal","2.0.3.0":"normal"}