[Haskell-cafe] printing unicode in Windows console: hPutChar error

[John Gleeson]

> On Nov 5, 2021, at 12:34, Brandon Allbery <allbery.b at gmail.com> wrote:
> 
> What version of GHC areyour students using? I believe sufficiently
> recent versions of ghc (but I don't know which; this may require
> 9.2.1) have an RTS option to use a new I/O manager, which among other
> things implements the widechar API for console I/O.

I found an email from Tamar
https://mail.haskell.org/pipermail/ghc-devs/2020-July/019053.html
that says the new Windows I/O manager is available in 8.12+, and is enabled with
+RTS --io-manager=native
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