任何 haskell 堆栈命令在 windows 上失败并显示:HostCannotConnect "127.0.0.1"

Any haskell stack command fails on windows with this: HostCannotConnect "127.0.0.1"

例如:

> stack ghci
Writing implicit global project config file to: C:\sr\global-project\stack.yaml
Note: You can change the snapshot via the resolver field there.
HttpExceptionRequest Request {
host                 = "s3.amazonaws.com"
port                 = 443
secure               = True
requestHeaders       = [("Accept","application/json")]
path                 = "/haddock.stackage.org/snapshots.json"
queryString          = ""
method               = "GET"
proxy                = Nothing
rawBody              = False
redirectCount        = 10
responseTimeout      = ResponseTimeoutDefault
requestVersion       = HTTP/1.1
}
(InternalException (HostCannotConnect "127.0.0.1" [Network.Socket.connect: <socket: 508>: failed (Connection refused (WSAECONNREFUSED))]))

来自同一控制台的 curl 命令在解析 url

时没有问题
> curl https://s3.amazonaws.com/haddock.stackage.org/snapshots.json


StatusCode        : 200
StatusDescription : OK
Content           : {"lts-2":"lts-2.22","lts-10":"lts-10.9","lts-9":"lts-9.21","lts-4":"lts-4.2","lts-3":"lts-3.22","lts-5":"lts-5.18","lts":"lts-11.0","lts-0":"lts-0.7","nightly":"nightly-2018-03-16","lts-1":"lts-1.15",
....

尝试在另一台 PC 上安装相同的版本 - 没有这样的问题。

有什么想法吗?

将此 注册表项 设置为 0 有帮助:

HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable