There have been several issues with Sass (sass-rails) and the Asset Pipeline. Some of them involving Compass (https://github.com/chriseppstein/compass/issues/516#issuecom...), some of them due to Sprockets (https://github.com/sstephenson/sprockets/pull/268#issuecomme...).
They have indeed been crippling for front-end development, and majorly under-reported since this summer. So if you're facing any of these issues, please participate in the GitHub Issues threads I linked above and help the relevant teams diagnose/improve the problems.
In Rails 3.2 RC1: Faster dev mode & routing, explain queries, tagged logger, storesstephenson
sprockets
Developer Tools2009–2014
sstephenson / sprockets · Archived
sprockets
Rack-based asset packaging system
12Distinct people
14Mentions
0Explicit recommenders
2.5KGitHub stars
What to know before exploring
What it is
Rack-based asset packaging system
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
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Also in these discussions
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This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 9:02:44 AM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year14 dated mentions
Observed mentions: 2009-09-22 04:43:33 UTC to 2014-07-27 15:17:24 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2009 | 2009-01-01 00:00:00 UTC | 2010-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2010 | 2010-01-01 00:00:00 UTC | 2011-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2011 | 2011-01-01 00:00:00 UTC | 2012-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2012 | 2012-01-01 00:00:00 UTC | 2013-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2013 | 2013-01-01 00:00:00 UTC | 2014-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 4 | 1 | 3 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
This repository was moved to https://github.com/rails/sprockets
Read the full README on GitHubWhat Hacker News says
5 sourcesI prefer Sprockets (rails asset pipeline, https://github.com/sstephenson/sprockets), which is Rack based..
In Asset Pipeline for SinatraSprockets includes Jammit-inspired JST support. You can use it with either EJS or Eco templates. See the "JavaScript Templating" section of the readme: https://github.com/sstephenson/sprockets#readme
You can even write your own JST template class. Here's an example that adds Mustache template support: https://github.com/josh/mustache-trimmer/blob/master/lib/til...
In Rails 3.1 Gem AvailableSprockets 2.0.0 released (Ruby/Rack asset packaging)
39 points · Open discussionThe coffee-script gem (https://github.com/josh/ruby-coffee-script) uses ExecJS (https://github.com/sstephenson/execjs) to invoke the CS compiler. Rails 3.1's asset pipelining system will use these gems by way of Sprockets 2 (https://github.com/sstephenson/sprockets) to compile and serve CoffeeScript to the browser.
If you're on Windows or Mac OS, ExecJS will use the JS runtime already installed on your system (Windows Script Host or Apple JavaScriptCore). You can also install a gem like therubyracer (V8 for MRI, available on Heroku) or therubyrhino (Rhino for JRuby) for faster compilation. And ExecJS can use Node.js or Spidermonkey if they're installed too.
In Rails 3.1 shipping with CoffeeScript