Re: [PATCH v3 6/6] rust: use strict provenance APIs

[Benno Lossin]

On Fri Mar 14, 2025 at 11:20 PM CET, Tamir Duberstein wrote:
> On Fri, Mar 14, 2025 at 6:00 PM Miguel Ojeda
> <miguel.ojeda.sandonis@xxxxxxxxx> wrote:
>>
>> On Fri, Mar 14, 2025 at 9:18 PM Benno Lossin <benno.lossin@xxxxxxxxx> wrote:
>> >
>> > I don't know when we'll be bumping the minimum version. IIRC 1.85.0 is
>> > going to be in debian trixie, so eventually we could bump it to that,
>> > but I'm not sure what the time frame will be for that.
>> >
>> > Maybe we can salvage this effort by gating both the lint and the
>> > unstable features on the versions where it works? @Miguel, what's your
>> > opinion?
>> >
>> > We could even make it simple, requiring 1.84 and not bothering with the
>> > older versions.
>>
>> Regarding Debian Trixie: unknown, since my understanding is that it
>> does not have a release date yet, but apparently mid May is the Hard
>> Freeze and then it may take e.g. a month or two to the release.
>>
>> And when it releases, we may want to wait a while before bumping it,
>> depending on how much time has passed since Rust 1.85.0 and depending
>> on whether we managed to get e.g. Ubuntu LTSs to provide a versioned
>> package etc.

Yeah that's what I thought, thanks for confirming.

>> If something simple works, then let's just go for that -- we do not
>> care too much about older versions for linting purposes, since people
>> should be testing with the latest stable too anyway.
>
> It's not going to be simple because `rust_common_flags` is defined
> before the config is read, which means I'll have to sprinkle
> conditional logic in even more places to enable the lints.
>
> The most minimal version of this patch would drop all the build system
> changes and just have conditionally compiled polyfills for the strict
> provenance APIs. Are folks OK with that?

So you'd not enable the lint, but fix all occurrences? I think we should
still have the lint (if it's too cumbersome, then let's only enable it
in the kernel crate).

---
Cheers,
Benno