Running assets:precompile just hangs, only in production

Question

I don't know what's different now, but ever since a few days ago, running rake assets:precompile just hangs forever. This only happens when I set RAILS_ENV=production.

If I tail -f production.log, I can see this:

Compiled rails_admin/jquery.pjax.js  (0ms)  (pid 28704)
Compiled jquery_nested_form.js  (0ms)  (pid 28704)
Compiled rails_admin/ra.nested-form-hooks.js  (233ms)  (pid 28704)
Compiled bootstrap.js  (10ms)  (pid 28704)
Compiled rails_admin/ra.widgets.js  (240ms)  (pid 28704)
Compiled rails_admin/ui.js  (100ms)  (pid 28704)
Compiled rails_admin/themes/default/ui.js  (0ms)  (pid 28704)
Compiled rails_admin/custom/ui.js  (0ms)  (pid 28704)
Compiled rails_admin/rails_admin.js  (1121ms)  (pid 28704)
Compiled rails_admin/jquery.colorpicker.css  (50ms)  (pid 28704)
Compiled rails_admin/imports.css  (9460ms)  (pid 28704)
Compiled rails_admin/rails_admin.css  (9472ms)  (pid 28704)

Since rails_admin/rails_admin.css is the last thing that shows up, it seems like rails_admin.css might be the culprit. The only thing rails_admin.css does is include a file called imports.css.scss.erb, and if you look at that file, there's so much there that it could be pretty much anything.

Any ideas?

Answer 1

Making rails_admin.css not include anything made precompilation work.