32 releases
0.9.33 | Oct 6, 2024 |
---|---|
0.9.31 | Sep 11, 2024 |
0.9.30 | Jul 29, 2024 |
0.9.29 | Feb 5, 2024 |
0.9.9 | Nov 29, 2021 |
#182 in Cargo plugins
14,567 downloads per month
1MB
13K
SLoC
cargo-hakari
cargo hakari
is a command-line application to manage workspace-hack crates. Use it to speed up
local cargo build
and cargo check
commands by up to 100x, and cumulatively by up to
1.7x or more.
For an explanation of what workspace-hack packages are and how they make your builds faster, see
the about
module.
Examples
The cargo-guppy
repository uses a workspace-hack crate managed by cargo hakari
. See the
generated Cargo.toml
.
Platform support
- Unix platforms: Hakari works and is supported.
- Windows: Hakari works and outputs file paths with forward slashes for consistency with
Unix. CRLF line endings are not supported in the workspace-hack's
Cargo.toml
. Within Git repositories,cargo hakari init
automatically does this for you. Here's how to do it manually. (Pull requests to improve this are welcome.)
Installation
Release binaries
Release binaries are available on GitHub
Releases, via cargo binstall
:
cargo binstall cargo-hakari
In GitHub Actions CI, use taiki-e/install-action
,
which uses cargo binstall
under the hood:
- name: Install cargo-hakari
uses: taiki-e/install-action@v2
with:
tool: cargo-hakari
Installing from source
To install or update cargo-hakari
, run:
cargo install cargo-hakari --locked
If $HOME/.cargo/bin
is in your PATH
, the cargo hakari
command will be available.
Usage
Getting started
There are four steps you must take for cargo hakari
to work properly.
1. Check in your Cargo.lock
For hakari to work correctly, you must add your Cargo.lock
to version
control,
even if you don't have any binary crates. This is because patch version bumps in dependencies
can add or remove features or even entire transitive dependencies.
2. Initialize the workspace-hack
Initialize a workspace-hack crate for a workspace at path my-workspace-hack
:
cargo hakari init my-workspace-hack
3. Generate the Cargo.toml
Generate or update the contents of a workspace-hack crate:
cargo hakari generate
4. Add dependencies to the workspace-hack
Add the workspace-hack crate as a dependency to all other workspace crates:
cargo hakari manage-deps
Making hakari work well
These are things that are not absolutely necessary to do, but will make cargo hakari
work
better.
1. Update the hakari config
Open up .config/hakari.toml
, then:
- uncomment or add commonly-used developer platforms
- read the note about the resolver, and strongly consider setting
resolver = "2"
in your workspace'sCargo.toml
.
Remember to run cargo hakari generate
after changing the config.
2. Keep the workspace-hack up-to-date in CI
Run the following commands in CI:
cargo hakari generate --diff # workspace-hack Cargo.toml is up-to-date
cargo hakari manage-deps --dry-run # all workspace crates depend on workspace-hack
If either of these commands exits with a non-zero status, you can choose to fail CI or produce a warning message.
For an example, see this GitHub action used by
cargo-guppy
.
All cargo hakari
commands take a --quiet
option to suppress output, though showing diff
output in CI is often useful.
3. Consider a patch
directive
If your workspace is depended on as a Git or path dependency, it is strongly recommended
that you follow the instructions in the patch
directive
section.
Information about the workspace-hack
The commands in this section provide information about components in the workspace-hack.
Why is a dependency in the workspace-hack?
Print out information about why a dependency is present in the workspace-hack:
cargo hakari explain <dependency-name>
Does the workspace-hack ensure that each dependency is built with exactly one feature set?
cargo hakari verify
If some dependencies are built with more than one feature set, this command will print out details about them. This is always a bug---if you encounter it, a bug report with more information would be greatly appreciated!
Publishing a crate
If you publish crates to crates.io
or other registries, see the publishing
module.
Disabling and uninstalling
Disable the workspace-hack crate temporarily by removing generated lines from Cargo.toml
.
(Re-enable by running cargo hakari generate
.)
cargo hakari disable
Remove the workspace-hack crate as a dependency from all other workspace crates:
cargo hakari remove-deps
Configuration
cargo hakari
is configured through .config/hakari.toml
at the root of the workspace. Running
cargo hakari init
causes a new file to be created at this location.
Example configuration:
# The name of the package used for workspace-hack unification.
hakari-package = "workspace-hack"
# Cargo resolver version in use -- version 2 is highly recommended.
resolver = "2"
# Format for `workspace-hack = ...` lines in other Cargo.tomls.
dep-format-version = "4"
# Add triples corresponding to platforms commonly used by developers here.
# https://doc.rust-lang.org/rustc/platform-support.html
platforms = [
# "x86_64-unknown-linux-gnu",
# "x86_64-apple-darwin",
# "x86_64-pc-windows-msvc",
]
# Write out exact versions rather than specifications. Set this to true if version numbers in
# `Cargo.toml` and `Cargo.lock` files are kept in sync, e.g. in some configurations of
# https://dependabot.com/.
# exact-versions = false
For more options, including how to exclude crates from the output, see the config
module.
Stability guarantees
cargo-hakari
follows semantic versioning, where the public API is the command-line interface.
Within a given series, the command-line interface will be treated as append-only.
The generated Cargo.toml
will also be kept the same unless:
- a new config option is added, in which case the different output will be gated on the new option, or
- there is a bugfix involved.
Contributing
See the CONTRIBUTING file for how to help out.
License
This project is available under the terms of either the Apache 2.0 license or the MIT license.
Dependencies
~15–26MB
~401K SLoC