Re: [PATCH v7 0/3] Convert USE_NSEC to runtime config

> Topic name: dk/use-nsec-runtime (applied)
>
> Topic summary: Expose USE_NSEC as a runtime configuration, since
> build-time is too early for distributing Git [1]. As a result, common
> index-related options, like git-diff, are less likely to hit "racy git"
> problems on supported filesystems.
>
> [1]: https://git.github.io/rev_news/2026/07/31/edition-137/
>
> Built on master (2c78326f81 (The 11th batch, 2026-08-05)).
>
> Changes in v7:
>
> • documentation typofix
> • I opted not to finagle #ifdefs more [2] nor to add a "safe default
>   when istate->repo is different from the_repository" (replies to [2])