fix!(config): re-enable implicit toolchain installation in Cfg::local_toolchain() with optional opt-out
#4227
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djc
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Mar 5, 2025
…l_toolchain()` with optional opt-out
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Note
Following @djc's previous statement at #4211 (comment), I sincerely apologize for all the previous issues related to the abrupt breaking change without enough clarity and transparency, and, if a well-organized public discussion allows this change to happen, a potential experimental stage with a properly-extended migration period.
Complements #4214.
This fixes the case of
cargo +nightly --versionnot implicitly installingnightlywhen it's not installed.I did a minimal test locally and this PR seems to be working.
@rust-lang/rustup Please feel free to modify this PR as you see fit.