Shard Detail

shards v0.7.1

Dependency manager for the Crystal language

Install & Use

Add the following code to your project's shard.yml under:

dependencies to use in production
- OR -
development_dependencies to use in development

  github: crystal-lang/shards
  version: 0.7.1



Dependency manager for the Crystal language.


Crystal applications and libraries are expected to have a shard.yml file at their root looking like this:

name: shards
version: 0.1.0

    github: datanoise/
    branch: master

    version: ~> 0.3.1

license: MIT

When libraries are installed from Git repositories, the repository is expected to have version tags following the semver format, prefixed with a v. Examples: v1.2.3 or v2.0.0-rc1.

Please see the SPEC for more details about the shard.yml format.


Shards is now distributed with Crystal itself (at least in the Homebrew and Debian/Ubuntu packages). You can invoke it with crystal deps.

You may download a statically compiled 64bit executable of Shards for Linux or OS X from the releases page and install it somewhere into your PATH, this version will take precedence over the bundled version.

Alternatively you may download a source tarball from the same page (or clone the repository) then run make —or make release for an optimized build— and copy the newly generated bin/shards somewhere into your PATH. A good place is /usr/local/bin for example.

You are now ready to create a shard.yml for your projects (see the SPEC).

Simply run shards install to install your dependencies, which will lock your dependencies into shard.lock, which you should check into version control, because install will always install the locked versions, for reproducible intallations across computers.

Last but not least, use shards --help to list the other commands and their options.

Happy Hacking!


These requirements are only for compiling Shards.

  • Crystal

    Please refer to for instructions for your operating system.

  • libyaml

    On Debian/Ubuntu Linux you may install the libyaml-dev package.

    On Mac OS X you may install it using homebrew with brew install libyaml then make sure to have /usr/local/lib in your LIBRARY_PATH environment variable (eg: export LIBRARY_PATH="/usr/local/lib:$LIBRARY_PATH"). Please adjust the path per your Homebrew installation.


Licensed under the Apache License, Version 2.0. See LICENSE for details.