Hello, RubyGems upstream maintainer here. I heard that Bundler now has trouble installing the proper platform specific version of any gems that ship “non-gnu” variants (not only `sass-embedded`) when using RubyGems packed by Debian due to this issue. That means that people using Debian stable fail to use Jekyll: https://github.com/jekyll/jekyll/issues/9478#issuecomment-1785797746.
I’m not fully sure about this issues introduced by the upstream patch but happy to help out with making it possible to revert the patch. Thanks!