How to include SASS files using sass-rails gem with the Asset Pipeline in Rails 3.2.15? Operation not supported?

Question

I'm trying to figure out the best practise way to serve my (SASS) CSS assets. I've googled and googled and now my mind is boggled!

Rails 3.2.15

Gemfile:

# Asset pipeline
group :assets do
  gem 'sass-rails',   '3.2.6'
  gem 'coffee-rails', '3.2.2'
  gem 'uglifier',     '2.3.0'
end

production.rb

  # Disable Rails's static asset server (Apache or nginx will already do this)
  config.serve_static_assets = false

  # Compress JavaScripts and CSS
  config.assets.compress = true

  # Don't fallback to assets pipeline if a precompiled asset is missed
  config.assets.compile = false

  # Generate digests for assets URLs
  config.assets.digest = true

  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
  config.assets.precompile += %w( *.js *.css )

  # Choose which compressors to use
  # config.assets.js_compressor  = :uglifier
  # config.assets.css_compressor = :scss

application.css.scss

/*
*= require data_tables
*= require data_tables_colvis
*= require styles
*= require jquery.ui.autocomplete
*= require jquery.ui.datepicker
*= require jquery.ui.slider
*= require timepicker
*= stub email
*= require_directory
*/

.ui-widget,
.ui-widget input,
.ui-widget select,
.ui-widget textarea,
.ui-widget button { font-family: inherit; font-size: inherit; }

Note, some of the files i require are in app/assets/stylesheets while others are in vendor/assets/stylesheets

Commands run

rm -rf tmp/
rm -rf public/assets/
bundle exec rake assets:clean RAILS_ENV=production --trace
bundle exec rake assets:precompile RAILS_ENV=production --trace 

Error encountered

** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
rake aborted!
Operation not supported - (/media/shared/code/user/appname/tmp/cache/sass/21e55874b33b09754ee1326254c109e623619141/application.css.scssc20131108-41651-yzw3cr, /media/shared/code/user/appname/tmp/cache/sass/21e55874b33b09754ee1326254c109e623619141/application.css.scssc)
  (in /media/shared/code/user/appname/app/assets/stylesheets/application.css.scss)
/usr/lib/ruby/gems/1.9.1/gems/sass-3.2.12/lib/sass/util.rb:886:in `rename'
/usr/lib/ruby/gems/1.9.1/gems/sass-3.2.12/lib/sass/util.rb:886:in `atomic_create_and_write_file'

The trailing c on the temp file path seems slightly suspicious to me?

Any ideas what's going on? What is the 'right' way to do this?

Thanks

Answer 1

Reverting back to sass-rails v3.2.5 appeared to fix the problem.