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libcore: vec::windowed iterates, not allocates. - #5904
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Aug 21, 2026
8774: feat: Honor `.cargo/config.toml` r=matklad a=Veykril  Implements `cargo/.config` build target and cfg access by using unstable cargo options: - `cargo config get` to read the target triple out of the config to pass to `cargo metadata` --filter-platform - `cargo rustc --print` to read out the `rustc_cfgs`, this causes us to honor `rustflags` and the like. If those commands fail, due to not having a nightly toolchain present for example, they will fall back to invoking rustc directly as we currently do. I personally think it should be fine to use these unstable options as they are unlikely to change(even if they did it shouldn't be a problem due to the fallback) and don't burden the user if they do not have a nightly toolchain at hand since we fall back to the previous behaviour. cc rust-lang#8741Closesrust-lang#6604, Closesrust-lang#5904, Closesrust-lang#8430, Closesrust-lang#8480 Co-authored-by: Lukas Wirth <lukastw97@gmail.com>
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And add some documentation.