scripts: Remove explicit rustup self update #445
Merged
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Commit 17f8e37 ("Convert toolchain file to TOML syntax") switched from the bare toolchain file to the TOML-based one for better management of the toolchain and components used.
Commit 1cb61e6 ("deps.sh: Update rustup or inform user of env vars") added an explicit
rustup self update
because there were still cases, a year later, of people not having a rustup new enough to support the TOML-based toolchain file.Now 2 years after that, it should be safe to drop the explicit self update. The TOML format has widespread adoption and rustup now self updates by default. This should allow distro-provided rustup, which disables the self update feature, to work if it is already installed in place of the one downloaded from https://rustup.rs.