Specify User-Agent to get over my company's firewall

[igrep]

Problem

My colleagues and I are using stack behind a (weirdly) strong firewall, which denies http requests whose User-Agent header and the destination URL match with the preset white list, since the recent change by the infra team.
So I asked the infra team to add stack and s3.amazonaws.com (and so on) to the white list, but he declined because stack accesses to various domains without any User-Agent header!!

Solution

If you don't have a problem, I'll make a PR to add some User-Agent header ("The Haskell Stack" looks good.
So can you tell me where I should fix?

Version of stack I'm using

> stack --version
Version 1.5.1, Git revision 600c1f01435a10d127938709556c1682ecfd694e x86_64 hpack-0.17.1

[mgsloan]

Sure, this would be an appreciated PR! There are a fair number of places that do downloads. Searching for Network. should turn up most of the modules that do web requests.

[igrep]

Now I'm trying to decide which functions to wrap.
Then, I have a question: Shouldn't I touch Hackage.Security.Client.Repository.HttpLib.HttpClient?
Because that module is said to be copied from the other. So is it better to keep as is?

[mgsloan]

@igrep You might need to make some changes to hackage-security itself, I'm not sure if it sets user-agent.