cargo diet is a companion program of The Lean Crate Initiative to help computing 'optimal'
include directives for your
Cargo.toml manifest. 'optimal' here is the smallest size a crate can have while retaining everything relevant to building the code and populating
lib.rs with useful information on the landing page.
Please note that this opinionated approach won't prevent you to adjust the initial
include directive to your liking and needs, without
interfering with you on subsequent invocations.
make the crate lean by editing the
Cargo.tomlfile in place
simulate how the
Cargo.tomlfile would be edited to obtain a lean crate
cargo diet -nor
cargo diet --dry-run
force computing an
includedirective even though one exists already
cargo diet -ror
cargo diet --reset-manifest
- can also be used with
--dry-runsuch as in
cargo diet --reset-manifest --dry-runor
cargo diet -rn
prevent the crate from exceeding a certain package size (best on CI)
cargo diet -n --package-size-limit 50KB
- See the installation instructions specifically for CI, allowing to quickly download a pre-built binary
With a recent version of
cargo (obtainable using rustup), the following should work:
cargo install cargo-diet
Using GitHub releases
Pre-built binaries can be found in the releases section of this repository.
You can use an installation script to automate this process:
curl -LSfs https://raw.githubusercontent.com/the-lean-crate/cargo-diet/master/ci/install.sh | \ sh -s -- --git the-lean-crate/cargo-diet
On CI for controlling the crate package size
Assuming tests are running on a linux box, the following script will install the latest version of
and run it with flags to assert a crate package size does not exceed 10KB, a value that can freely be chosen.
That way it's easy to get a warning if there are new and possibly unexpected files in one of the directories which are included already.
curl -LSfs https://raw.githubusercontent.com/the-lean-crate/cargo-diet/master/ci/install.sh | \ sh -s -- --git the-lean-crate/cargo-diet --target x86_64-unknown-linux-musl cargo diet --dry-run --package-size-limit 10KB
Also have a look at how this is actually used in GitHub Actions.
Learn about other targets