Sprockets still looking for `sassc`

Been trying out the new pipeline with sass as the --css option in Rails. It seems that Sprockets is still looking for sassc, which causes a Rails exception. Dart Sass is compiling fine to the build directory, so just looks like a legacy dependency issue.

I could get it working fine by uncommenting sassc-rails in the Gemfile, however this is obviously not needed with Dart Sass. I'm happy to open a PR on Rails main to remove the dependency if this is the agreed route.

[dhh]

I saw this and think I have a solution. We have to remove the link_tree stylesheets from the config/manifest.js. Will get this sorted.

Ah, of course — I forgot about the magic comments in Sprockets. Are they relevant anymore with the shiny new setup?

I can confirm that removing the link_tree line for the stylesheets in manifest.json fixes the issue. Would you like me to open a PR, or are you on it?

[dhh]

Fixed within #3 👍