There is an updated pull request by 0x5c against master on the void-packages repository

https://github.com/0x5c/void-packages rust-install-offline
https://github.com/void-linux/void-packages/pull/37029

common/build-style/cargo.sh: use offline install
This prevents `cargo install` from wasting time fetching the crate registry.

[CI skip]

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A patch file from https://github.com/void-linux/void-packages/pull/37029.patch is attached