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docs/rust: Install c2rust with --locked

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Closes: https://github.com/RIOT-OS/RIOT/issues/21079
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chrysn 2025-02-21 14:27:09 +01:00
parent f67055c3b2
commit 31c45477e8
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doc/doxygen/src/using-rust.md
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@ -147,8 +147,9 @@ This encompass both components needed for riot-sys and for the later installatio
In addition to the Rust compiler you'll need to install the C2Rust transpiler;
as this is using some recent fixes, it is best installed as:
<!-- The locked works around <https://github.com/dtolnay/proc-macro2/issues/475> as closed in <https://github.com/immunant/c2rust/pull/1197>; there is no newer release that could be tested. -->
```shell
$ cargo install c2rust --git https://github.com/immunant/c2rust --tag v0.19.0
$ cargo install c2rust --git https://github.com/immunant/c2rust --tag v0.19.0 --locked
```
If multiple versions of LLVM are installed locally, it may be necessary to prefix it with the selected LLVM version: