Fails without sassc-rails

[joshmn]

I use dartsass-rails in one of my projects. Without sassc-rails, I can't run the generator:

<internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require': cannot load such file -- sassc (LoadError)
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:17:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/better_errors-2.10.0/lib/better_errors/error_page_style.rb:1:in `<main>'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/better_errors-2.10.0/lib/better_errors/error_page.rb:5:in `<main>'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/better_errors-2.10.0/lib/better_errors.rb:8:in `<main>'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler/runtime.rb:60:in `block (2 levels) in require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler/runtime.rb:55:in `each'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler/runtime.rb:55:in `block in require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler/runtime.rb:44:in `each'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler/runtime.rb:44:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/bundler.rb:195:in `require'
	from /Users/donkey/code/rails/darted/config/application.rb:7:in `<main>'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/command/actions.rb:22:in `require_application!'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/command/actions.rb:14:in `require_application_and_environment!'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/commands/generate/generate_command.rb:21:in `perform'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/thor-1.2.2/lib/thor/command.rb:27:in `run'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/thor-1.2.2/lib/thor/invocation.rb:127:in `invoke_command'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/thor-1.2.2/lib/thor.rb:392:in `dispatch'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/command/base.rb:87:in `perform'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/command.rb:48:in `invoke'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/railties-7.0.5/lib/rails/commands.rb:18:in `<main>'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from <internal:/Users/donkey/.rbenv/versions/3.2.1/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
	from /Users/donkey/.rbenv/versions/3.2.1/lib/ruby/gems/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
	from bin/rails:4:in `<main>'

however,

If I first install trestle with sassc-rails, then remove it and use dartsass-rails, everything works up until I need to compile in production (really weird, really mysterious).

To fix this, I add sassc-rails to my bundle in a production group, and explicitly nil the css_compressor in production.rb:

  # Compress CSS using a preprocessor.
  config.assets.css_compressor = nil

(due to this: https://github.com/sass/sassc-rails/blob/master/lib/sassc/rails/railtie.rb#LL74C56-L74C100)

then everything compiles just fine :)