frontend: Infer MSRV based on edition if rust_version is not set
#9996
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…rsion` is not set
Turbo87
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LawnGnome
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Nov 29, 2024
In rust-lang#9996, we started showing the MSRV based on the edition for crate versions that declare an edition but not a `rust-version` in their manifest. This isn't strictly correct: a crate may require features added later in an edition than in the first Rust version that defined that edition, and showing this as an MSRV implies a level of support that the crate author may not have intended. So, we shouldn't show an MSRV if one isn't declared, but we _can_ show the edition if one of those is defined. Let's do that. Fixes rust-lang#10103.
Turbo87
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Dec 2, 2024
In #9996, we started showing the MSRV based on the edition for crate versions that declare an edition but not a `rust-version` in their manifest. This isn't strictly correct: a crate may require features added later in an edition than in the first Rust version that defined that edition, and showing this as an MSRV implies a level of support that the crate author may not have intended. So, we shouldn't show an MSRV if one isn't declared, but we _can_ show the edition if one of those is defined. Let's do that. Fixes #10103.
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e.g. this will start to show Rust 1.31.0 as the required minimum version for https://crates.io/crates/syn/1.0.0 since it declares
edition = "2018"but without an explicitrust-version.Related:
versions.editioncolumn to the database and expose it on the API #9932