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From: Alice Ryhl <aliceryhl@google.com>
To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: "Gary Guo" <gary@garyguo.net>, "Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Nathan Chancellor" <nathan@kernel.org>,
	"Nicolas Schier" <nicolas@fjasle.eu>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>,
	rust-for-linux@vger.kernel.org, linux-kbuild@vger.kernel.org,
	linux-kernel@vger.kernel.org, patches@lists.linux.dev
Subject: Re: [PATCH 09/18] rust: proc-macro2: enable support in kbuild
Date: Mon, 10 Nov 2025 13:34:52 +0000	[thread overview]
Message-ID: <aRHp_MadSjnYwHdy@google.com> (raw)
In-Reply-To: <CANiq72mGYKYZmQ8g5AbXCsRS+WPxbeaSyngR69jsEpY8akouog@mail.gmail.com>

On Mon, Nov 10, 2025 at 02:28:06PM +0100, Miguel Ojeda wrote:
> On Mon, Nov 10, 2025 at 2:10 PM Gary Guo <gary@garyguo.net> wrote:
> >
> > So I think the implementation here is sensible. I believe Miguel's
> > patch is also pretty much replicating the logic in proc-macro2's
> > build.rs.
> 
> Exactly, I was essentially following what upstream does for stable compilers.
> 
> (More generally, even if a feature may work, if upstream doesn't
> usually test "older nightlies", then I wonder if we should enable such
> combinations/setups anyway, unless we need them for a particular
> reason).

If these features change the public API exposed by proc-macro2, then it
seems better to always disable it to prevent situations where you
accidentally wrote code that does not work on our minimum rustc version.

(Of course, this is a polyfill and no API is changed, then that's a
different situation and then this LGTM.)

Alice

  reply	other threads:[~2025-11-10 13:34 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-10  9:50 [PATCH 00/18] `syn` support Miguel Ojeda
2025-11-10  9:50 ` [PATCH 01/18] rust: condvar: avoid `pub` in example Miguel Ojeda
2025-11-10 10:24   ` Alice Ryhl
2025-11-10 11:10     ` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 02/18] rust: kbuild: introduce `core-flags` and `core-skip_flags` Miguel Ojeda
2025-11-10 10:19   ` Miguel Ojeda
2025-11-10 11:50     ` Alice Ryhl
2025-11-10 10:27   ` Alice Ryhl
2025-11-10 19:18   ` John Hubbard
2025-11-12 11:13     ` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 03/18] rust: kbuild: simplify `--cfg` handling Miguel Ojeda
2025-11-10 10:33   ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 04/18] rust: kbuild: add host library support Miguel Ojeda
2025-11-10 10:43   ` Alice Ryhl
2025-11-10 11:17     ` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 05/18] rust: proc-macro2: import crate Miguel Ojeda
2025-11-10  9:50 ` [PATCH 06/18] rust: proc-macro2: add SPDX License Identifiers Miguel Ojeda
2025-11-10  9:50 ` [PATCH 07/18] rust: proc-macro2: remove `unicode_ident` dependency Miguel Ojeda
2025-11-10 10:50   ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 08/18] rust: proc-macro2: add `README.md` Miguel Ojeda
2025-11-10 10:52   ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 09/18] rust: proc-macro2: enable support in kbuild Miguel Ojeda
2025-11-10 11:38   ` Alice Ryhl
2025-11-10 13:10     ` Gary Guo
2025-11-10 13:28       ` Miguel Ojeda
2025-11-10 13:34         ` Alice Ryhl [this message]
2025-11-10 19:34   ` John Hubbard
2025-11-12 11:14     ` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 10/18] rust: quote: import crate Miguel Ojeda
2025-11-10  9:50 ` [PATCH 11/18] rust: quote: add SPDX License Identifiers Miguel Ojeda
2025-11-10  9:50 ` [PATCH 12/18] rust: quote: add `README.md` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 13/18] rust: quote: enable support in kbuild Miguel Ojeda
2025-11-10 11:44   ` Alice Ryhl
2025-11-10 13:13     ` Gary Guo
2025-11-10 13:22       ` Miguel Ojeda
2025-11-10 13:35         ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 14/18] rust: syn: import crate Miguel Ojeda
2025-11-10 10:26   ` Miguel Ojeda
2025-11-10  9:50 ` [PATCH 15/18] rust: syn: add SPDX License Identifiers Miguel Ojeda
2025-11-10  9:50 ` [PATCH 16/18] rust: syn: remove `unicode-ident` dependency Miguel Ojeda
2025-11-10 11:47   ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 17/18] rust: syn: add `README.md` Miguel Ojeda
2025-11-10 11:47   ` Alice Ryhl
2025-11-10  9:50 ` [PATCH 18/18] rust: syn: enable support in kbuild Miguel Ojeda
2025-11-10 11:49   ` Alice Ryhl
2025-11-10 13:38     ` Miguel Ojeda
2025-11-10 13:42       ` Alice Ryhl
2025-11-10 19:43   ` John Hubbard
2025-11-10 13:59 ` [PATCH 00/18] `syn` support Gary Guo
2025-11-10 14:20   ` Miguel Ojeda
2025-11-21  4:37   ` Jesung Yang
2025-11-21  5:36     ` Miguel Ojeda
2025-11-21  9:08       ` Jesung Yang
2025-11-23 12:50         ` Miguel Ojeda
2025-11-23 22:46           ` Jesung Yang
2025-11-10 15:59 ` Jonathan Corbet
2025-11-10 16:27   ` Miguel Ojeda
2025-11-10 17:04     ` Benno Lossin

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