sass-site/source/ruby-sass.html.haml
2019-03-04 13:57:56 -08:00

91 lines
3.5 KiB
Plaintext

---
title: Ruby Sass
introduction: >
Ruby Sass was the original implementation of Sass, but it's since been
deprecated. It's currently in a sunset maintenance period, and it will be
officially unmaintained one year after the release of Dart Sass 1.0.0. Ruby
Sass users should migrate to another implementation.
---
:markdown
## Maintenance Policy
Ruby Sass will continue to be maintained until 26 March 2019. During this
maintenance period, bugs will be fixed as much as possible but no new
features will be added. The only exception is for features that are
necessary to support new CSS syntax, which will continue to be added.
[Dart Sass][], the new primary implementation, doesn't always behave 100%
the same as Ruby Sass—it implements a number of behavioral changes that
were planned for Ruby Sass, but were never implemented in a stable
version. To make migration easier, recent versions of Ruby Sass emit
warnings for any code that won't be compatible with Dart Sass. Ongoing
maintenance includes adding any warnings for new behavioral differences,
if they come up.
[Dart Sass]: #{url_for "dart-sass"}
Once the maintenance period ends, Ruby Sass's repository will be archived,
no more changes of any kind will be made, and no new releases will be cut.
## Adopt Ruby Sass
Support for Ruby Sass is being turned down because the Sass core team no
longer has time to maintain it as well as [Dart Sass][] and [LibSass][].
But that doesn't mean it has to go away. If a community member wanted to
take on the task of maintaining it, the core team would be happy to help
get them up to speed. It's not an easy job: it would require keeping on
top of bug fixes and implementing new language features as they're
designed by the language team. But it would also be an opportunity to work
on a project that's used be thousands of people every day.
[LibSass]: #{url_for "libsass"}
If you're interested in adopting Ruby Sass, send an email to
[Natalie](mailto:nex342@gmail.com) and [Chris](mailto:chris@eppsteins.net)
and they'll talk to you about next steps.
## Migrating Away
If you run Ruby Sass using the command-line `sass` executable, all you
need to do is install Dart Sass's [command-line executable][install]
instead. The interface isn't identical, but most options work the same
way.
[install]: #{url_for "install"}
If you use the `sass` gem as a library, the [`sassc`][] gem is the most
seamless way to move away from Ruby Sass. It uses [LibSass][] to provide
the same API for compiling Sass and defining custom functions as Ruby
Sass, except that it uses the `SassC` module instead of `Sass`. However,
it [doesn't yet][sassc#72] support the same `Importer` API. You can also
use the [`sassc-rails`][] gem to plug smoothly into Ruby on Rails.
[`sassc`]: http://rubygems.org/gems/sassc
[LibSass]: #{url_for "/libsass"}
[sassc#72]: https://github.com/sass/sassc-ruby/issues/72
[`sassc-rails`]: https://rubygems.org/gems/sassc-rails
Alternately, if you're using a JS build system, you can integrate that
with [Dart Sass][] as a JavaScript library.
[Dart Sass]: #{url_for "/dart-sass"}
## Installing
If you need to install Ruby Sass for a legacy app, run
gem install sass
If you get a permissions error on Linux of Mac OS X, you may instead need
to run
sudo gem install sass
Once Ruby Sass installed, try running
sass --version
If it installed correctly, this should print
`Ruby Sass #{impl_version :ruby}`.