2015-03-27 13:29:36 -05:00
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% Unstable Rust
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2015-04-03 18:09:41 -05:00
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Rust provides three distribution channels for Rust: nightly, beta, and stable.
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Unstable features are only available on nightly Rust. For more details on this
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process, see [this post](http://blog.rust-lang.org/2014/10/30/Stability.html).
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To install nightly Rust, you can use `rustup.sh`:
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```bash
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$ curl -s https://static.rust-lang.org/rustup.sh | sudo sh -s -- --channel=nightly
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```
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If you're concerned about the [potential insecurity](http://curlpipesh.tumblr.com/) of using `curl | sudo sh`,
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please keep reading and see our disclaimer below. And feel free to use a two-step version of the installation and examine our installation script:
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```bash
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$ curl -f -L https://static.rust-lang.org/rustup.sh -O
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$ sudo sh rustup.sh --channel=nightly
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```
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If you're on Windows, please download either the [32-bit
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installer](https://static.rust-lang.org/dist/rust-nightly-i686-pc-windows-gnu.exe)
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or the [64-bit
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installer](https://static.rust-lang.org/dist/rust-nightly-x86_64-pc-windows-gnu.exe)
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and run it.
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If you decide you don't want Rust anymore, we'll be a bit sad, but that's okay.
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Not every programming language is great for everyone. Just run the uninstall
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script:
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```bash
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$ sudo /usr/local/lib/rustlib/uninstall.sh
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```
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If you used the Windows installer, just re-run the `.exe` and it will give you
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an uninstall option.
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You can re-run this script any time you want to update Rust. Which, at this
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point, is often. Rust is still pre-1.0, and so people assume that you're using
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a very recent Rust.
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This brings me to one other point: some people, and somewhat rightfully so, get
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very upset when we tell you to `curl | sudo sh`. And they should be! Basically,
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when you do this, you are trusting that the good people who maintain Rust
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aren't going to hack your computer and do bad things. That's a good instinct!
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If you're one of those people, please check out the documentation on [building
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Rust from Source](https://github.com/rust-lang/rust#building-from-source), or
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[the official binary downloads](http://www.rust-lang.org/install.html). And we
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promise that this method will not be the way to install Rust forever: it's just
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the easiest way to keep people updated while Rust is in its alpha state.
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