AF


---------- Forwarded message ---------
From: Ari Fordsham <arifordsham@gmail.com>
Date: Sun, 8 Aug 2021 at 16:43
Subject: Re: GHC Module change database
To: Vaibhav Sagar <vaibhavsagar@gmail.com>


That's where I generated it from :-)

It would be nice to generate that from the new database.

My main motivation was as follows: There are two possible paradigms for GHC API compatibility:

- Export old names for new modules - as in  ghc-api-compat
  This allows existing code to (kind of) 'just work' - but it doesn't help in managing that code as it gets extended to use new features

- Export new names to old modules
  I am thinking of working on a tool that does this.
  You need to rewrite code to use current modules (maybe https://github.com/facebookincubator/retrie/issues/33 will help), but then you can just target the latest API, and have compatibility built in.
  This seems to me better for active codebases.

  Having a 'single source of truth' database will help with this.

AF


On Sun, 8 Aug 2021 at 16:36, Vaibhav Sagar <vaibhavsagar@gmail.com> wrote:
Hi Ari,


Thanks,
Vaibhav

On Mon, Aug 9, 2021 at 1:34 AM Ari Fordsham <arifordsham@gmail.com> wrote:
I've made a database of GHC API module changes.


This might be useful for automatic tooling.

It would be nice if this would be moved into the GHC Gitlab, and kept up-to-date.

Ari Fordsham
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