Improve System.Environment haddocks

[Gwern Branwen]

On Fri, Dec 23, 2011 at 9:16 PM, Gwern Branwen <gwern0 at gmail.com> wrote:
> On Sun, Nov 27, 2011 at 6:11 PM, Gwern Branwen <gwern0 at gmail.com> wrote:
>> 17:52:34 < goodgrue> Is there a way to change the environment
>> variables associated with Xmonad.Prompt.Shell at runtime?  e.g. I'd
>> like to be able to modify $http_proxy and have that affect
>> subsequently launched processes.
>> 17:55:31 < gwern> goodgrue: that'd be kind of hard. you could prepend
>> a mpodification of $HTTP_PROXY to each command
>> 17:56:10 < gwern> ideally you'd modify xmonad's own environment
>> 17:56:33 < goodgrue> gwern: yeah, the latter is what I was thinking
>> of. is that possible?
>> 17:57:08 < gwern> shell uses `getEnv` from System.Environment but
>> there's no setEnv!
>> 17:57:21 < gwern> if there were, you could probably bind it to a key
>> and use a prompt
>> 17:58:44 < goodgrue> Hm...sounds like this may be a nice piece of
>> missing functionality. is there any reason you can think of that i
>> wouldn't be able to implement setEnv myself?
>> 17:59:04 < gwern> http://hackage.haskell.org/trac/ghc/ticket/3587
>> 17:59:14 < gwern> looks like 'putEnv' may be the real name
>
> Ping. This was a very simple patch; am I really going to have to file
> a bug and everything?

No objections to this doc fix yet...

-- 
gwern
http://www.gwern.net
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