rust: Don't be so picky about toolchains #18840
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This is possible starting with Rust 1.65.
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19058: rust: Use stable Rust [backport 2022.10] r=maribu a=maribu # Backport of #18839 ### Contribution description Since Rust 1.65, we don't depend on anything nightly any more. This changes the examples and documentation to use stable. ### Testing procedure * Green CI with tests enabled * Look at changed documentation ([rendered](https://ci.riot-os.org/results/2923b30a4ba04dbface1ed38fb6aae12/doc-preview/using-rust.html#toolchain)) <del>Note that these will *not* pass yet: This needs a CI update (no PR associated: Any CI image built from now on will do).</del> ### Issues/PRs references A follow-up will simplify things a bit further, but that will depend on CI to have made stable the default, which is a later step in what is a bit of a lock-step game: * [x] CI rebuilds riotdocker -- no PR, then stable=1.65 * [ ] Use stable in examples -- this PR, then examples use stable * [ ] CI removes nightly and makes stable the default -- RIOT-OS/riotdocker#214, then default=stable * [ ] Use the new default to simplify makefiles -- #18840 Co-authored-by: chrysn <chrysn@fsfe.org>
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19058: rust: Use stable Rust [backport 2022.10] r=maribu a=maribu # Backport of #18839 ### Contribution description Since Rust 1.65, we don't depend on anything nightly any more. This changes the examples and documentation to use stable. ### Testing procedure * Green CI with tests enabled * Look at changed documentation ([rendered](https://ci.riot-os.org/results/2923b30a4ba04dbface1ed38fb6aae12/doc-preview/using-rust.html#toolchain)) <del>Note that these will *not* pass yet: This needs a CI update (no PR associated: Any CI image built from now on will do).</del> ### Issues/PRs references A follow-up will simplify things a bit further, but that will depend on CI to have made stable the default, which is a later step in what is a bit of a lock-step game: * [x] CI rebuilds riotdocker -- no PR, then stable=1.65 * [ ] Use stable in examples -- this PR, then examples use stable * [ ] CI removes nightly and makes stable the default -- RIOT-OS/riotdocker#214, then default=stable * [ ] Use the new default to simplify makefiles -- #18840 Co-authored-by: chrysn <chrysn@fsfe.org>
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19058: rust: Use stable Rust [backport 2022.10] r=miri64 a=maribu # Backport of #18839 ### Contribution description Since Rust 1.65, we don't depend on anything nightly any more. This changes the examples and documentation to use stable. ### Testing procedure * Green CI with tests enabled * Look at changed documentation ([rendered](https://ci.riot-os.org/results/2923b30a4ba04dbface1ed38fb6aae12/doc-preview/using-rust.html#toolchain)) <del>Note that these will *not* pass yet: This needs a CI update (no PR associated: Any CI image built from now on will do).</del> ### Issues/PRs references A follow-up will simplify things a bit further, but that will depend on CI to have made stable the default, which is a later step in what is a bit of a lock-step game: * [x] CI rebuilds riotdocker -- no PR, then stable=1.65 * [ ] Use stable in examples -- this PR, then examples use stable * [ ] CI removes nightly and makes stable the default -- RIOT-OS/riotdocker#214, then default=stable * [ ] Use the new default to simplify makefiles -- #18840 Co-authored-by: chrysn <chrysn@fsfe.org>
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Jan 12, 2023
19058: rust: Use stable Rust [backport 2022.10] r=miri64 a=maribu # Backport of #18839 ### Contribution description Since Rust 1.65, we don't depend on anything nightly any more. This changes the examples and documentation to use stable. ### Testing procedure * Green CI with tests enabled * Look at changed documentation ([rendered](https://ci.riot-os.org/results/2923b30a4ba04dbface1ed38fb6aae12/doc-preview/using-rust.html#toolchain)) <del>Note that these will *not* pass yet: This needs a CI update (no PR associated: Any CI image built from now on will do).</del> ### Issues/PRs references A follow-up will simplify things a bit further, but that will depend on CI to have made stable the default, which is a later step in what is a bit of a lock-step game: * [x] CI rebuilds riotdocker -- no PR, then stable=1.65 * [ ] Use stable in examples -- this PR, then examples use stable * [ ] CI removes nightly and makes stable the default -- RIOT-OS/riotdocker#214, then default=stable * [ ] Use the new default to simplify makefiles -- #18840 Co-authored-by: chrysn <chrysn@fsfe.org>
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Contribution description
So far, we've forced the Rust version to be used quite a bit. Now that we'll only have stable Rust in docker anyway and won't have breaking changes from Rust any more, we can relax this a bit.
The current changes in this PR simplify the documented installation steps and relax the choice of which Rust toolchain is used for building examples.
Open questions
Do we want to go even further, remove all the
CARGO_CHANNELinfrastructure and rely purely on Rust mechanisms (rustup toolchain default/rustup toolchain override/rust-toolchain.toml/RUSTUP_TOOLCHAIN=) for selecting the toolchani?I'm leaning towards "yes"; we can do that now, so why insist on own stuff when we don't need to any more.
Testing procedure
Issues/PRs references
This builds on #18839 -- see there for an overview list of locksteps with CI.