DartSass-Rails无法读取Gem中的admin.scss文件，该如何解决？

我开发了一个Admin Gem，其中包含独立的admin.scss文件，该文件已引入到Gem的admin.html.erb布局中。将此Gem接入使用Propshaft与DartSass的Rails 8应用并运行bin/dev时，出现错误：

Error reading app/assets/stylesheets/admin.scss: Cannot open file.

我尝试过多种方法让DartSass识别Gem中的构建路径，但均无进展。根据DartSass文档说明：

dartsass:build includes application assets paths as Sass load paths.
Assuming the gem has made assets visible to the Rails application, no
additional configuration is required to use them.

我已在Gem的tractor.rb文件中添加了资产路径配置：

require_relative "tractor/version"

module Tractor
  class Error < StandardError; end

  class Engine < ::Rails::Engine
    # Add the assets paths to the engine
    initializer "tractor.assets.paths" do |app|
      app.config.assets.paths << root.join("app", "assets", "stylesheets")
    end

    # Configure Dart Sass builds
    initializer "tractor.assets.configure" do |app|
      # app.config.dartsass.builds = {
      #   "admin.scss" => "admin.css"
      # }
      puts "Dart Sass builds: #{app.config.dartsass.builds.inspect}"
    end

    initializer "tractor.debug" do |app|
      puts "Asset paths: #{app.config.assets.paths.inspect}"
    end
  end
end

但问题仍未解决，请问此需求是否可行？我遗漏了什么配置？

内容的提问来源于stack exchange，提问作者Will