Building ghc on Windows with msys2

Simon Peyton Jones simonpj at
Mon Sep 15 21:33:20 UTC 2014

Thank you!  Indeed Neil Mitchell is also acting as “guinea pig” at the moment.  It would be *great* if together you were able to clean up the “how to build on Windows” page, remove out of date or misleading information, and yes I think we should focus on msys2.

Great stuff


From: ghc-devs [mailto:ghc-devs-bounces at] On Behalf Of Gintautas Miliauskas
Sent: 15 September 2014 21:58
To: ghc-devs at
Subject: Building ghc on Windows with msys2


I have been messing around a little bit with building GHC from source on Windows, and found the msys2 wikipage<> quite useful, but somewhat outdated. Quite a few steps in those instructions are no longer necessary and can be omitted. I am working on cleaning up that wikipage right now and should be done in a day or two.

I've found a recent email<> in the middle of updating the wikipage about other people planning to do the same, so I thought I'd shoot an email to make sure that work is not being duplicated.

msys2 seems to be in good shape and should probably be promoted to the primary suggested method to build ghc on Windows. Let's look into that once the new build instructions have been proofread and verified.

Best regards,
Gintautas Miliauskas
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