Windows 10 Creators Update will break GHC (Was FW: GHC on Windows 10 15019+)

Ben Gamari ben at
Tue Apr 4 14:12:08 UTC 2017

Ryan Trinkle <ryan.trinkle at> writes:

> I would strongly urge that any new tarballs be released under new names,
> and that the old tarballs be kept in place.  Changing existing tarball URLs
> silently causes breakage for Nix, and, I would imagine, for any other build
> systems that are particularly concerned with reproducibility.  Nix packages
> based on GHC use an SHA-256 hash of the tarball to check it when
> downloading, which of course will be broken by any change, no matter how
> minor.
I completely agree here; I avoid updating existing artifacts whenever


- Ben

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