Parallel --make (GHC build times on newer MacBook Pros?)

Edward Kmett ekmett at
Thu Sep 1 18:06:01 CEST 2011

On Thu, Sep 1, 2011 at 8:49 AM, Simon Marlow <marlowsd at> wrote:

> On 01/09/2011 08:44, Evan Laforge wrote:
>> Yes, the plan was to eventually have a parallel --make mode.
>> If that's the goal, wouldn't it be easier to start many ghcs?
> It's an interesting idea that I hadn't thought of.  There would have to be
> an atomic file system operation to "commit" a compiled module - getting that
> right could be a bit tricky (compilation isn't deterministic, so the commit
> has to be atomic).

I suppose you could just rename it into place when you're done.

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