`chalk apply` failures due to zstd package fetch failure from aptitude

Incident Report for Chalk

Resolved

Mitigation deployed; platform_version v3.31.86 contains resolution for self-hosted metadata plane customers.
Posted Apr 17, 2026 - 07:33 UTC

Identified

An aptitude mirror is down; this is breaking `chalk apply` docker builds that rely on `zstd` from aptitude. Working on a mitigation.
Posted Apr 17, 2026 - 06:37 UTC
This incident affected: Control Plane.
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