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Automatically install override toolchain when missing. #1250

Merged
merged 2 commits into from
Oct 17, 2017
Merged

Automatically install override toolchain when missing. #1250

merged 2 commits into from
Oct 17, 2017

Commits on Oct 15, 2017

  1. Automatically install override toolchain when missing. 

    A typical scenario is:

* I work on a repository that uses `rust-toolchain` to pin to a specific Nightly version
* I run `git pull`, `rust-toolchain` has been changed to update to a new Rust version
* I run `cargo build`

Result before this PR (typically): rustup fails with an error like:

```
error: override toolchain 'nightly-2017-08-31' is not installed
info: caused by: the toolchain file at '/home/simon/projects/servo/rust-toolchain' specifies an uninstalled toolchain
```

A better result would be to install toolchains as needed.

Closes rust-lang#1218
    @SimonSapin
    SimonSapin committed Oct 15, 2017
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Commits on Oct 16, 2017

  1. More tests for override auto-install

    @SimonSapin
    SimonSapin committed Oct 16, 2017
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    eae3131 View commit details
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