title: Haskell stack: How can I fix this connection timeout?
body: <p>I have some downtime at work and would like to spend it getting familiar with Haskell.</p>
  
  <p>I am trying a simple <code>HellowWorld.fs</code>, which works fine at home, but doesn't at work.</p>
  
  <p>I have a 'developer' account with the ability to install software, and generally IT can be convinced to unblock various network restrictions, but I have to be able to describe exactly what needs to be unblocked.</p>
  
  <p>Here is what I am seeing:</p>
  
  <pre><code>C:\WorkSpace&gt;stack HelloWorld.hs
  Downloading lts-13.7 build plan ...
  RedownloadHttpError (HttpExceptionRequest Request {
    host                 = "raw.githubusercontent.com"
    port                 = 443
    secure               = True
    requestHeaders       = [("User-Agent","The Haskell Stack")]
    path                 = "/fpco/lts-haskell/master//lts-13.7.yaml"
    queryString          = ""
    method               = "GET"
    proxy                = Nothing
    rawBody              = False
    redirectCount        = 10
    responseTimeout      = ResponseTimeoutDefault
    requestVersion       = HTTP/1.1
  }
   ConnectionTimeout)
  Access violation in generated code when reading 00007ffc39deffff
  </code></pre>
  
  <p>This is from Windows 10 command prompt.</p>
  
  <p>I can navigate just fine to <a href="https://raw.githubusercontent.com/fpco/lts-haskell/master//lts-13.7.yaml" rel="nofollow noreferrer">raw.githubusercontent.com/fpco/lts-haskell/master//lts-13.7.yaml</a> from my browser. Is that even where the problem is in this case? How can I diagnose what the problem is and then communicate the solution to IT? Even better, how can I solve it without getting IT involved?</p>