Max Bolingbroke <[email protected]> writes:
> My installed GHC is looping when building your TcRnDriver, oddly.

Yikes, that is bad news.  You mean that your pre-installed GHC, without
any of my modifications, is going into a loop?  Not good.

Even though I suspect this isn't my fault, I need to look into it.  What
version of GHC are you using to boot (I use 6.12) and on what platform?
I will try to reproduce it.  If you've run into this problem and
reported it, I bet 2-3 other people did as well and just gave up.


> I'm going to wait for the HP release to (hopefully)

Hewlett Packard?


> I guess that equally this could be done implicitly (which I think is
> what TH does) at the cost of having variables at level n shadow
> variables at level m < n.

Perhaps, but there are papers showing that

   %% <[ e ]>     !=     <[ %% e ]>

... so CSP can't always be implicit.  Moreover, in the context of
*heterogeneous* metaprogramming, using CSP comes with a price, so I'm
not sure it's a great idea for it to happen without an explicit request
from the programmer in the form of some kind of annotation (like %%).

  - a


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