https://github.com/sass/sassc-rails

Integrate SassC-Ruby with Rails!
https://github.com/sass/sassc-rails

Keywords from Contributors

activerecord activejob mvc rubygem rack rubocop ruby-gem code-formatter static-code-analysis nokogiri

Last synced: about 22 hours ago
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Repository metadata

Integrate SassC-Ruby with Rails!

Host: GitHub
URL: https://github.com/sass/sassc-rails
Owner: sass
License: mit
Archived: true
Created: 2015-03-04T03:27:34.000Z (almost 11 years ago)
Default Branch: master
Last Pushed: 2025-10-24T23:16:11.000Z (4 months ago)
Last Synced: 2026-02-25T19:42:26.329Z (6 days ago)
Language: HTML
Homepage:
Size: 207 KB
Stars: 705
Watchers: 17
Forks: 106
Open Issues: 62
Releases: 0
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
- Code of conduct: CODE_OF_CONDUCT.md

SassC::Rails

LibSass has reached its end of life.
It will no longer receive updates of any kind. Users should migrate to
Dart Sass at their earliest convenience. There is a
Ruby plugin using Embedded
Dart Sass available now.

We all love working with Sass, but compilation can take quite a long time for larger
codebases. This gem integrates the C implementation of Sass,
LibSass, into the asset pipeline.

In one larger project, this made compilation 4x faster:

# Using sassc-rails

[1] pry(main)> Benchmark.bm { |bm| bm.report { Rails.application.assets["application.css"] } }
       user     system      total        real
   1.720000   0.170000   1.890000 (  1.936867)

# Using sass-rails

 [1] pry(main)> Benchmark.bm { |bm| bm.report { Rails.application.assets["application.css"] } }
       user     system      total        real
  7.820000   0.250000   8.070000 (  8.106347)

This should essentially be a drop in alternative to sass-rails.

Inline Source Maps

With SassC-Rails, it's also extremely easy to turn on inline source maps. Simply
add the following configuration to your development.rb file:

# config/environments/development.rb
config.sass.inline_source_maps = true

After adding this config line, you may need to clear your assets cache
(rm -r tmp/cache/assets), stop spring, and restart your rails server. You may
also wish to disable line comments (config.sass.line_comments = false).

Note, as indicated, these source maps are inline. They will not generate additional
files or anything like that. Instead, they will be appended to the compiled
application.css file.

LibSass Compatibility With Ruby Sass

For a look at the compatibility between Ruby Sass and LibSass, check this
compatibility chart out.

Installation

Add this line to your application's Gemfile:

gem 'sassc-rails'

And then execute:

$ bundle

Common Issues

Deployment to Heroku

Due to LibSass compilation requirements, you must upgrade to the
Heroku Cedar-14 Stack
in order to successfully install this gem.

Upgrading to Cedar-14 is usually a painless process.

Installing alongside a gem that depends on Sass-Rails

Libraries explicitly depending on Sass-Rails, such as ActiveAdmin, can cause
conflicts with installation of SassC-Rails. While we have no built-in solution
for this, please check out this issue
for a workaround.

Credits

This gem is based on sass-rails, and
is maintained by Ryan Boland and awesome contributors.

Changelog

2.1.2
- Correct reference to SassC::Script::Value::String
2.1.1
- Fix Scaffolding
2.1.0
- JRuby support
- SCSS / SASS scaffolding
2.0.0
- Drop support for Sprockets 2
- Remove dependency on Ruby Sass
1.3.0
- Silence Sprockets deprecation warnings
- Sprockets 4 compatibility
1.2.1
- Bump SassC (and thus LibSass) version
1.2.0
- Support sprockets-rails 3
- Only depend on Railties instead of full Rails
1.1.0
- Moved under the official sass organization!
- Source line comments (app.config.sass.line_comments)
- Prevent sass-rails railtie from running
- CSS compression may be disabled in test mode. Special thanks to this Sass-Rails PR for inspiration.
1.0.0
- Initial Release
- Add support for inline source maps
- Support compression in the way that Sass-Rails handles it

Contributing

Fork it ( https://github.com/sass/sassc-rails/fork )
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Add Tests
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

Owner metadata

Name: Sass
Login: sass
Email:
Kind: organization
Description:
Website: https://sass-lang.com
Location:
Twitter: SassCSS
Company:
Icon url: https://avatars.githubusercontent.com/u/317889?v=4
Repositories: 28
Last ynced at: 2024-10-29T23:35:42.738Z
Profile URL: https://github.com/sass

GitHub Events

Total

Pull request event: 3
Fork event: 3
Watch event: 6
Issue comment event: 18

Last Year

Fork event: 1
Watch event: 3
Issue comment event: 9

Committers metadata

Last synced: 2 days ago

Total Commits: 129
Total Committers: 29
Avg Commits per committer: 4.448
Development Distribution Score (DDS): 0.349

Commits in past year: 1
Committers in past year: 1
Avg Commits per committer in past year: 1.0
Development Distribution Score (DDS) in past year: 0.0

Name	Email	Commits
Ryan Boland	b**m@g**m	84
schneems	r**n@g**m	6
Rafael Mendonça França	r**a@g**m	4
Edward Ocampo-Gooding	e**d@e**t	3
Javier Julio	j**l@g**m	3
John Hawthorn	j**n@g**m	3
mintcore	j**n@m**e	3
Aqeel Nazeer	a**n@g**m	2
Edward Ocampo-Gooding	h**o@e**o	1
William Beene	b**r@t**m	1
brainopia	b**a@e**m	1
Anthony Sottile	a**e@u**u	1
Corey Csuhta	c****a	1
Gleb Mazovetskiy	g**b@g**m	1
Henrik Nyh	h**k@n**e	1
Jason Crossfield	j**d@g**m	1
Jean Boussier	j**r@g**m	1
Mark Huk	m**e@g**m	1
Natalie Weizenbaum	n**z@g**m	1
Nick Schonning	n**i@g**m	1
Paul Bowsher	p**r@g**m	1
ReadmeCritic	f**t@g**m	1
Rodrigo Rosenfeld Rosas	r**s@g**m	1
Roman Usherenko	r**o@g**m	1
Ryunosuke Sato	t**s@g**m	1
Sam Jewell	s**m@b**m	1
Yamagishi Kazutoshi	y**s@d**h	1
ferdinand	f****o	1
kinopyo	f**y@g**m	1

Committer domains:

Issue and Pull Request metadata

Last synced: about 2 months ago

Total issues: 70
Total pull requests: 35
Average time to close issues: over 1 year
Average time to close pull requests: 10 months
Total issue authors: 66
Total pull request authors: 29
Average comments per issue: 3.81
Average comments per pull request: 1.83
Merged pull request: 12
Bot issues: 0
Bot pull requests: 0

Past year issues: 1
Past year pull requests: 2
Past year average time to close issues: N/A
Past year average time to close pull requests: about 1 month
Past year issue authors: 1
Past year pull request authors: 2
Past year average comments per issue: 25.0
Past year average comments per pull request: 0.0
Past year merged pull request: 0
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/sass/sassc-rails

Top Issue Authors

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Valkryst (1)
michaelglass (1)
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LightningRpper (1)

Top Pull Request Authors

olleolleolle (3)
thatguyinabeanie (2)
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bolandrm (2)
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Top Issue Labels

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Top Pull Request Labels

Package metadata

Total packages: 11
Total downloads:
- rubygems: 317,187,102 total
Total docker downloads: 1,200,672,198
Total dependent packages: 162 (may contain duplicates)
Total dependent repositories: 109,601 (may contain duplicates)
Total versions: 68
Total maintainers: 1

gem.coop: sassc-rails

Integrate SassC-Ruby into Rails.

Homepage: https://github.com/sass/sassc-rails
Documentation: http://www.rubydoc.info/gems/sassc-rails/
Licenses: MIT
Latest release: 2.1.2 (published over 6 years ago)
Last Synced: 2026-03-01T10:02:28.249Z (2 days ago)
Versions: 20
Dependent Packages: 0
Dependent Repositories: 0
Downloads: 158,602,137 Total
Docker Downloads: 600,336,099
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 0.054%
- Downloads: 0.161%
Maintainers (1)
- bolandrm

rubygems.org: sassc-rails