[ghc-steering-committee] Fine-Grained Unused Warnings (#343)

[Chris Dornan]

Folks,

Proposal: Fine-Grained Unused Warnings (#42)
Author: Jakob Brünker
Rendered proposal: https://github.com/JakobBruenker/ghc-proposals/blob/fine-grained-unused/proposals/0000-fine-grained-unused-warnings.rst
Discussion: https://github.com/ghc-proposals/ghc-proposals/pull/434
Recommendation: Acceptance

## Summary

The proposal partitions warning about unused identifiers into 

a) bindings that are truly unused (not mentioned anywhere) and 
b) bindings that are mentioned exclusively in code that is itself (transitively) unused,

and controls the latter with the new flag -Windirectly-unused-binds, which is enabled by default (to preserve existing behaviour).

Everybody seems to be in favour of the proposal in general and it has been extensively revised for clarity and to ensure in interoperates consistently with the existing warning-flags mechanisms.

I propose that we accept this proposal if nobody objects by the start of next week (Monday, 2024-03-18).

Chris
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