Windows build again

Ben Gamari ben at
Sat Dec 10 05:06:06 UTC 2016

Simon Peyton Jones via ghc-devs <ghc-devs at> writes:

> Windows build is broken in a new way.
> When I run validate I end up with sh.exe processes that consume a full CPU forever.   See the process log below.
> Note that these are not GHC processes: they are shells!  I have no conception of what they are doing.
> Any ideas, or things I can to do gather more evidence?
> This is an up to date HEAD, with some small changes to GHC. I suppose
> I can try a completely clean HEAD, but I can't see how my changes
> could make the shell loop.

Oh dear; this sounds like an msys2 issue. Tamar, any idea what might be
going on here?

How up-to-date is your msys2 installation, Simon?


- Ben

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