"Respectful" YAML patching in Rust
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YAML patching in Rust is technically deep, actionable as a library, and relevant to infrastructure tooling.
A Rust developer compared four crates for 'respectful' YAML patching—preserving comments and formatting during edits. Of the candidates, yamlpath+yamlpatch alone correctly handled a trading bot config test (list-assets operation), while yaml-edit dropped an outer comment and rust-yaml produced multiple errors. The exercise highlights the gap left by unmaintained serde_yaml and stalled comment support in yaml-rust2 and saphyr.
Choose yamlpath+yamlpatch for YAML patching that preserves both comments and formatting; avoid rust-yaml and yaml-edit for critical config files.
For building reliable config management tooling in Rust, losing comments or formatting during automated YAML edits breaks historical context and formatting conventions, making this comparison directly relevant to ensuring production-grade infrastructure as code.