$ cargo watch
Cargo Watch watches over your project's source for changes, and runs Cargo commands when they occur.
If you've used nodemon, gulp, guard, watchman, or similar others, it will probably feel familiar.
Usage
- Build with
$ cargo build
. - Place in your $PATH.
- Invoke using
$ cargo watch
.
You may also be able to use cargo install
.
Details
By default, it runs build
then test
. You can easily override this, though:
$ cargo watch [command...]
A few examples:
$ cargo watch doc
$ cargo watch test bench
$ cargo watch "build --release"
$ cargo watch "build --release" "test test_"
It pairs well with dybuk, the compiler output prettifier:
$ cargo watch check |& dybuk
Just like any Cargo command, it will run from any project subdirectory.
Cargo Watch is currently hard-coded to not compile things more often than every two seconds, to avoid overusage. If you wish to help implementing a better solution, see #2.
It will ignore everything that's not a Rust file, and files that start with
either a dot (.foo.rs
) or a tilde (~foo.rs
).
It uses the notify crate for file events, so it supports all platforms, some more efficiently than others (if you use the big three — Linux, Mac, Windows — you will be fine).
Etc
Created by Félix Saparelli and awesome contributors.