Hi, renjie Thank you for bringing this up.
Most of our users are currently using the latest stable or even nightly Rust, so MSRV itself is not a major concern at the moment. We can upgrade to Rust 1.85 (the first version to support Edition 2024!) today. However, if we do need to establish an MSRV policy, I think a three-month period (covering two Rust stable releases) would be reasonable. That said, I will phrase this as "at least three months," meaning we retain the flexibility to delay upgrading MSRV if it's not necessary. This way, we won't have to track and upgrade it every time a new version is released. On Fri, Feb 21, 2025, at 11:35, Renjie Liu wrote: > Personally I prefer a longer gap(like three months) so that we don't need to > force users to upgrade to the rust version. But this may not be a big problem > in the rust world as rust's release is usually quite stable and backward > compatible. > > On Fri, Feb 21, 2025 at 11:30 AM Renjie Liu <liurenjie2...@gmail.com> wrote: >> Hi: >> >> As discussed in this issue >> <https://github.com/apache/iceberg-rust/issues/440>, we have landed support >> for using unstable rust for tooling, while stable rust for publishing >> libraries. Also we enforced checking of msrv(minimum supported rust version) >> in our ci. However, there is one thing undetermined yet: how frequently >> should we upgrade msrv? Or the question is, as rust continues to release new >> versions, what's the gap between our msrv with the latest released rust >> version? >> >> Different projects have different policies, for example sqlx >> <https://github.com/launchbadge/sqlx/blob/main/FAQ.md#what-versions-of-rust-does-sqlx-support-what-is-sqlxs-msrv> >> uses a six week gap, while tokio >> <https://github.com/tokio-rs/tokio/blob/master/CONTRIBUTING.md#minimum-supported-rust-version-msrv> >> uses a six month gap. >> >> Different policies have different pros and cons. A short gap ensures that >> our library could use newer features/improvements in rust release, while it >> forces users to upgrade to newer rust versions. Longer gaps have opposite >> pros and cons. >> >> Looking forward to hearing your thoughts! Xuanwo https://xuanwo.io/
