feat(config): warn user if auto-install is enabled #4454
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| pub(crate) async fn from_local( | ||
| name: LocalToolchainName, | ||
| install_if_missing: bool, | ||
| install_if_missing: impl Fn() -> anyhow::Result<bool>, |
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This change is made so that the self.should_auto_install() call is postponed to L64, and that the false positive in L60 can be suppressed.
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requested review from
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ChrisDenton
and removed request for
djc
src/test/clitools.rs
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| // Disable auto installation of active toolchain unless explicitly requested | ||
| cmd.env("RUSTUP_AUTO_INSTALL", "0"); |
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Not sure about this. IMO we should keep the defaults in the tests the same way they are when running real-world rustup, otherwise things get confusing.
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@djc FYI this line should be a proof, not a requirement: the changes in this commit modulo this line will continue to work even if RUSTUP_AUTO_INSTALL is set to 1 or not set at all. How about unsetting it here?
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Unsetting it seems okay to me, as that should make it similar to the default behavior.
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@djc Hmmm technically those fixes did work but now we are creating a lot of noises in the snapshot tests 🤔
I will try to find a way out of this.
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@djc How about introducing another env var to remove this warning without disabling auto install?
Update: Okay, I think this means that the evaluation of self.should_auto_install() is not lazy enough. I'll try to fix that first.
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I just had another look, it turns out that Cfg::local_toolchain() calls .maybe_ensure_active_toolchain(None) which is the expected behavior (the old one, and the default for the moment), even if the toolchain is generally assumed to exist, and changing this might cause unexpected breakage.
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This commit ensures that every test case relying on the `RUSTUP_AUTO_INSTALL` config option is explicitly setting it, and every other test case will pass regardless of its value.
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Closes #4445.