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https://github.com/crystal-lang/shards

Dependency manager for the Crystal language
https://github.com/crystal-lang/shards

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Dependency manager for the Crystal language

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# Shards



[![CI](https://github.com/crystal-lang/shards/workflows/CI/badge.svg)](https://github.com/crystal-lang/shards/actions?query=workflow%3ACI+event%3Apush+branch%3Amaster)



Dependency manager for the [Crystal language](https://crystal-lang.org).



## Usage



Crystal applications and libraries are expected to have a `shard.yml` file

at their root looking like this:



```yaml

name: shards

version: 0.1.0



dependencies:

  openssl:

    github: datanoise/openssl.cr

    branch: master



development_dependencies:

  minitest:

    git: https://github.com/ysbaddaden/minitest.cr.git

    version: ~> 0.3.1



license: MIT

```



When libraries are installed from Git repositories, the repository is expected

to have version tags following a [semver](http://semver.org/)-like format,

prefixed with a `v`. Examples: `v1.2.3`, `v2.0.0-rc1` or `v2017.04.1`.



Please see the [SPEC](docs/shard.yml.adoc) for more details about the

`shard.yml` format.



## Install



Shards is usually distributed with Crystal itself (e.g. Homebrew and Debian

packages). Alternatively, a `shards` package may be available for your system.



You can download a source tarball from the same page (or clone the repository)

then run `make release=1`and copy `bin/shards` into your `PATH`. For

example `/usr/local/bin`.



You are now ready to create a `shard.yml` for your projects (see details in

[SPEC](docs/shard.yml.adoc)). You can type `shards init` to have an example

`shard.yml` file created for your project.



Run `shards install` to install your dependencies, which will lock your

dependencies into a `shard.lock` file. You should check both `shard.yml` and

`shard.lock` into version control, so further `shards install` will always

install locked versions, achieving reproducible installations across computers.



Run `shards --help` to list other commands with their options.



Happy Hacking!



## Developers



### Requirements



These requirements are only necessary for compiling Shards.



* Crystal



  Please refer to  for

  instructions for your operating system.



* `molinillo`



  The shard `molinillo` needs to be in the Crystal path.

  It is available at 

  You can install it either with a pre-existing `shards` binary (running `shards install`)

  or just check out the repository at `lib/crystal-molinillo` (`make lib`).



* 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.



* [asciidoctor](https://asciidoctor.org/)



  Needed for building manpages.



### Getting started



It is strongly recommended to use `make` for building shards and developing it.

The [`Makefile`](./Makefile) contains recipes for compiling and testing. Building

with `make` also ensures the source dependency `molinillo` is installed. You don't

need to take care of this yourself.



Run `make bin/shards` to build the binary.

* `release=1` for a release build (applies optimizations)

* `static=1` for static linking (only works with musl-libc)

* `debug=1` for full symbolic debug info



Run `make install` to install the binary. Target path can be adjusted with `PREFIX` (default: `PREFIX=/usr/bin`).



Run `make test` to run the test suites:

* `make test_unit` runs unit tests (`./spec/unit`)

* `make test_integration` runs integration tests (`./spec/integration`) on `bin/shards`



Run `make docs` to build the manpages.



### Devenv



This repository contains a configuration for [devenv.sh](https://devenv.sh) which

makes it easy to setup a reproducible environment with all necessary tools for

building and testing.



- Checkout the repository

- Run `devenv shell` to get a shell with development environment



A hook for [automatic shell activation](https://devenv.sh/automatic-shell-activation/)

is also included. If you have `direnv` installed, the devenv environment loads

automatically upon entering the repo folder.



## License



Licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for

details.