Stabilize edition key and add cargo new --edition
#5984
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alexcrichton
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r? @matklad (rust_highfive has picked a reviewer for you, use r? to override) |
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r? @ehuss |
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Tweak (or drop?) the section in src/doc/src/reference/unstable.md? |
| let manifest = fs::read_to_string(paths::root().join("foo/Cargo.toml")).unwrap(); | ||
| assert!(manifest.contains("edition = \"2018\"")); | ||
| } | ||
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A 'what is the default edition' test would be good too -- it should be 2018 I believe.
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From what I understand, the team discussed this and agreed not to do this early for nightly and just wait for another cycle
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Looking at that document provides no clear rationale to me unless I missed it - the plan is that RC1 is a fully edition 2018 compatible compiler - and making that edition the default for new projects makes sense then.
Could someone from the cargo team perhaps clear up why we didn't want to change the default?
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The conclusion stemmed from being conservative. The compiler isn't ready right-the-red-hot-second for --edition 2018 to be the default because there's still unstable features (like the module system) which are in the process of stabilizing. As soon as the compiler is ready we'll change, and we conservatively said that "just before October 25 this must happen"
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@alexcrichton right but this PR is part of several ones in the queue that will stabilize all the pieces.
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Ok! It does indeed look like everything is in motion now. I'll make a PR to change the default after this one.
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I've submitted #5989 which switches to generating 2018 by default.
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I also think we should land this now and upstream into rust-lang/rust, we can discuss and land the default change separately since it seems like we don't have consensus there. |
This commit stabilizes the `edition` key in `Cargo.toml`, both in the `[package]` section and inside subtargets. Additionally the `cargo new` and `cargo init` subcommands have been enhanced with a `--edition` flag to allow explicitly specifying the edition to be generated. This commit does not yet change the default edition that's generated. Closes rust-lang#5980
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@dwijnand an excellent point! The docs should be updated now (and tests hopefully passing) |
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@bors r+ |
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📌 Commit 3d02903 has been approved by |
Stabilize `edition` key and add `cargo new --edition` This commit stabilizes the `edition` key in `Cargo.toml`, both in the `[package]` section and inside subtargets. Additionally the `cargo new` and `cargo init` subcommands have been enhanced with a `--edition` flag to allow explicitly specifying the edition to be generated. This commit does not yet change the default edition that's generated. Closes #5980
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☀️ Test successful - status-appveyor, status-travis |
This commit stabilizes the
editionkey inCargo.toml, both in the[package]section and inside subtargets. Additionally thecargo newandcargo initsubcommands have been enhanced with a--editionflag to allowexplicitly specifying the edition to be generated.
This commit does not yet change the default edition that's generated.
Closes #5980