Codex built hawk to remove dead code and has already deleted thousands of lines
charliermarsh · x · 2026-07-21
Codex built a dead-code remover that already deleted thousands of lines
Charlie Marsh says he had Codex build hawk, a tool for finding and removing dead code across a Cargo workspace.
He reports that the tool has already been used to delete thousands of lines from both uv and Codex itself, making this a concrete example of an AI coding agent being put to work on real repository cleanup.
Related event: Dev builds Rust dead code cleanup tool hawk with Codex(2 posts)→
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