I'm generally OK with this proposal -- small benefits, but small costs too.

I left some comments here.

Only one is substantial. 
Simon



On Tue, 14 Jul 2026 at 22:28, Jakob Brünker <jakob.bruenker@gmail.com> wrote:
Hi all,

Our own Jaro Reinders, based on a proposal originally by Artyom Kuznetsov, proposes to introduce `-Wpuns` and `-Wpun-bindings`, to warn users when the same name appears in the term namespace and type namespace:

https://github.com/ghc-proposals/ghc-proposals/blob/pun-warnings/proposals/0000-pun-warnings.rst

These warnings would not be enabled by default, but would bring us a step forward on the path outlined by the accepted proposal #378 (Support the design for dependent types, https://github.com/ghc-proposals/ghc-proposals/pull/378), by supporting writing code in a way that plays well with the principles described in that proposal (i.e. the lexical scoping principle and syntactic unification principle).

They are also a good match for the recently introduced `-XNoListTuplePuns`, which already lets users avoid puns for some builtin types. Any users of `-XNoListTuplePuns` will likely want something along the lines of this proposal.

I left some comments on the github thread but I think they are small enough that they don't have to prevent us from voting on it.

I recommend we accept.

Please indicate whether you wish to accept this proposal.

Jakob

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