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This should give you the necessary background https://discourse.ubuntu.com/t/carefully-but-purposefully-oxidising-ubuntu/56995 https://discourse.ubuntu.com/t/c

• vlz 1y ago
  To summarize, a Jon Seager from Canonical says it’s for safety and resilience. > Performance is a frequently cited rationale for “Rewrite it in Rust” projects. While performance is high on my list of priorities, it’s not the primary driver behind this change. These utilities are at the heart of the distribution - and it’s the enhanced resilience and safety that is more easily achieved with Rust ports that are most attractive to me.