incompatibilty with sprocket 4

[hadmut]

Hi,
I have a an older rails app making use of sass files, which I just wanted to update. Since sass-rails is outdated, I've replaced it with sassc-rails and found, that it does not compile my sass sources:

% rake assets:precompile
rake aborted!
Sprockets::FileNotFound: couldn't find file 'applicationtest.sass' with type 'text/css'
Checked in these paths:
...

tracking it down revealed that it is just a single minor difference that tell whether things work:

It's in Gemfile.lock

The older version used

sprockets (3.7.2)

and this is working well. After Updating it turned into

sprockets (4.0.2)

and does not work anymore. Just changing the version number in Gemfile.lock changes whether things work smoothly or fail.

Seems as if sassc-rails is not compatible with sprockets 4

regards

[omarsotillo]

This is blocking upgrading to a Rails 6.0.0 and fully going into a webpacker (recommended) approach

[ahorek]

just change

//= require applicationtest.sass

to

//= require applicationtest