Understanding Rust Build Times

The discussion focuses on the misconceptions around build times in Rust, particularly addressing the impact of generated code. Amos reveals that he previously underestimated the processing times associated with Rust's `cargo` build system, particularly when inspecting generated code sizes. By using tools like `cargo expand`, he discovered that certain macros generated vastly larger code outputs than originally anticipated, with examples illustrating code swelling from 2000 lines to over 54,000 lines after expansion. This insight led to a broader examination of the implications of proc macros on build performance, emphasizing the importance of monitoring generated code volume.