Minimum Supported Rust Version (MSRV)

[pinkforest]

Rust has RFC open for MSRV: https://github.com/rust-lang/rust/issues/65262

Cargo has added it: https://github.com/rust-lang/cargo/pull/8037

I test MSRV as part of my CI: https://github.com/pinkforest/gis_puller/blob/main/.github/workflows/CI.yml

I have multiple toolchains so I just usually run & test with +toolchain to figure this out.

Badge is available from shields.io - e.g. 1.47.0: ![MSRV](https://img.shields.io/badge/MSRV-1.47.0-blue)

• [x] Determine MSRV
• [x] Specify in manifest
• [x] Add to CI to test MSRV in matrix
• [x] Add badge

[Skallwar]

I'm running foresterre/cargo-msrv. I will report the results tomorrow

[Skallwar]

The MSRV is: 1.46.0

[pinkforest]

Cool!

I would additionally eventually recommend setting in README/documentation:

• Policy promise for stable minus 2 for current development/main branch
• Tag in a table respective MSRV with each release/crate tag

Not too bothered usually but for heavily used libraries it might make sense eventually (hello enterprise world)