On 23 Jan 2020, at 13:08, Demi M. Obenour <demioben...@gmail.com> wrote:
> 
> Would you be willing to accept PRs that include the corresponding
> changes to the proofs, or which don’t affect verification?

PRs that don’t affect verification will be accepted subject to standard quality 
control (and availability of a CLA). These are not frequent, but happen. 
Typically they are platform ports.

One of the things we’d like to set up is a way for developers to check this for 
themselves, which should certainly help contributions. Not sure when this will 
be ready.

The same applies, in principle, to PRs that come with proof updates. We haven’t 
seen one of these yet.

The bar will be higher if the change affects kernel semantics (even if 
accompanied by proof), as we need to ensure that the design stays clean and 
principled.

Gernot

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