Use rustup.rs instead of rustup.sh for language: rust projects

[gifnksm]

Currently, for rust project, rustup.sh is used, but rust's official installation tool has been changed to rustup.rs.

rustup.rs supports more functions than rustup.sh such as cross compiling. I saw many Travis users generating cross compiled binaries on Travis with installing rustup.rs by their own.

[BanzaiMan]

How does this affect Rust builds? We download rustup.sh to install the version of Rust specified. Nowhere else is it used. Are you just requesting that rustup.rs be available for your builds?

[phil-opp]

rustup.rs is the official installation tool now and completely replaces rustup.sh (see the Readme of rustup.sh).

rustup.rs provides additional functionality after installation. For example, one can add cross compile to android through rustup target add arm-linux-androideabi. It is also possible to download the corresponding Rust source code through rustup component add rust-src (this is needed by tools such as xargo).

To use these features at the moment, one has to install Rust a second time by manually executing:

curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain=$TRAVIS_RUST_VERSION -y

[beefsack]

I currently need rustup.rs to install a target that works on both AWS Lambda and AWS Elastic Beanstalk (I need to target x86_64-unknown-linux-musl.)

Currently manually installing rustup.rs using the previous comment's technique but would be much easier if rustup.rs was installed and exposed.

[BanzaiMan]

if rustup.rs was installed and exposed.

Do you mean rustup, perhaps? The curl | sh pipe will execute the install script given by https://sh.rustup.rs, which puts binaries in $HOME/.cargo/bin. The binaries installed are:

$ ls ~/.cargo/bin
cargo  rustc  rustdoc  rust-gdb  rust-lldb  rustup

[Arzte]

Whoot! thanks