150,000 Lines of Vibe Coded Elixir: The Good, The Bad and The Ugly
Summary
BoothIQ evaluates a production use of vibe coded Elixir totaling about 150k lines and splits the discussion into the Good, the Bad, and the Ugly. The Good highlights Elixir smallness and terseness, immutability, Tidewave for logs, frontend quality improvements, and parallel work with Git worktrees. The Bad covers AI's struggles with architecture organization and imperative training causing defensive code, plus Git context concerns. The Ugly discusses debugging OTP and Async, and Ecto Sandbox test isolation issues. The Bottom Line is that AI powered coding yields large productivity gains but requires disciplined architecture and careful testing.