[BUG] Streaming broken when Faraday default adapter set to `:typhoeus`

[jkogara]

Basic checks

• I searched existing issues - this hasn't been reported
• I can reproduce this consistently
• This is a RubyLLM bug, not my application code

What's broken?

Streaming is broken when faraday is configured to use typhoeus as it's default adapter.

Env here https://github.com/crmne/ruby_llm/blob/main/lib/ruby_llm/streaming.rb#L76 is always nil

How to reproduce

Configure Faraday with

Faraday.default_adapter = :typhoeus

Faraday.default_connection = Faraday.new do |conn|
  conn.adapter Faraday.default_adapter
end

Do any streaming call

chat = RubyLLM.chat 
chat.ask("What is Watman") do |chunk|
  puts chunk.content
end

Expected behavior

Streaming works

What actually happened

Only blank lines will be emitted.

Environment

Think there's enough info here - I encountered a similar bug in another library - googleapis/google-api-ruby-client#24235 - may want to use the fix from there as inspiration.