Problem: I am using VS Code to edit Vagrantfile (Ruby syntax). By default, VS Code does not format these files correctly. When I install recommended Ruby extension like Ruby LSP, nothing happens when select "Format document".

Other extensions like Rufo, RuboCop, or Standard Ruby.. I get stuck in a "dependency hell" of error messages, including but not limited to:

• Failed to setup the bundle
• Gem::FilePermissionError (write permissions for /var/lib/gems/)
• bundle: not found
• couldn't find rufo for formatting (ENOENT)

Goal: I am looking for a "Plug and Play" way to get standard Ruby indentation/formatting in my Vagrantfile without having to manage a complex Ruby environment, Gemfiles, or system-level Ruby permissions.

Environment:

• Ubuntu: 24.04
• Ruby: 3.2.3
• Default Formatter: Prettier (which doesn't seem to support Ruby out of the box)