Hello,

Trevor Elliott and I have been slowly working on implementing Simon M's  "Mutable Constructor Fields" proposal [1].

The current state of the code is here:
https://github.com/yav/ghc/tree/wip/mutable-fields

I am not sure if this would be ready in time for 8.4 as I don't know what the time-line looks like, and also, the actual proposal is still in the process of being reviewed by the GHC committee.

-Iavor 

[1] https://github.com/simonmar/ghc-proposals/blob/mutable-fields/proposals/0000-mutable-fields.rst



On Sun, Sep 3, 2017 at 2:15 PM Simon Peyton Jones via ghc-devs <ghc-devs@haskell.org> wrote:

Ben, Simon, and ghc-devs

I have to write slides for the GHC status talk in the Haskell Implementor’s meeting.

Usually we have

  1. Current status (current release)
  2. What’s cooking for the next release
  3. GHC community comments

As background we have

What would you put under (1-3)?  Anything you’d like to see highlighted?

Simon

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