Linker.c broken

Simon Peyton Jones simonpj at
Mon Jul 4 12:56:18 UTC 2016

Let’s re-enable it.   Or: how can I selectively re-enable it for in my

From: ghc-devs [mailto:ghc-devs-bounces at] On Behalf Of Phyx
Sent: 04 July 2016 13:05
To: Erik de Castro Lopo <mle+hs at>; ghc-devs <ghc-devs at>
Subject: Re: Linker.c broken

There used to be a bug in the msys2 runtime which made certain processes hang on exit in a non deterministic way.

So the parallel runs was disabled. I was looking into it but haven't been able to reproduce it at all in months now since either upgrading msys2 or Windows (to Windows 10).

We have a ticket with more information on it and what I found back then, but haven't been able to progress.

It might be that they've just fixed it in the mean time.

On Mon, Jul 4, 2016, 12:58 Erik de Castro Lopo <mle+hs at<mailto:mle%2Bhs at>> wrote:
Phyx wrote:

> I can build and validate in about an hour myself using 9 jobs on a core i7.
> If I revert the change in the testsuite preventing parallel runs for
> Windows

Oh dear, why is that?

Erik de Castro Lopo<>
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