Agreed, we should do this.

It'd be simple to create a small class that replicates the OpenStruct usage in Homebrew::Cmd::Uses (I can do this real quick). Removing it from Homebrew::CLI::Args will be a bit more involved.

Yep, the class is a single file, and must of the functionality is via an @table attr that is accessed via method_missing: https://github.com/ruby/ostruct/blob/master/lib/ostruct.rb

It still leaves the major concerns intact though (e.g. performance & security), the code remains difficult to follow, etc. Opening this so we have a bit of time to think of something better (but feel free to self-assign if you have strong opinions).

I see your point. The goal here is not just to remove the OpenStruct dependency but also refactor the surrounding code so that it doesn't rely on OpenStruct-like anti-patterns.

The goal here is not just to remove the OpenStruct dependency but also refactor the surrounding code so that it doesn't rely on OpenStruct-like anti-patterns.

Exactly. OpenStruct is also pretty Sorbet-unfriendly.