Openharness Daily: Sandbox Substrate Spike Wraps Up
Two parallel sandbox-runtime experiments — gVisor and MicroSandbox — converged into a single decision record, while a routine task sweep cleared out completed and stale work ahead of the next sprint.
Duration: PT2M4S
Episode overview
This episode is a short developer briefing from Openharness Daily.
It explains recent repository work in plain language.
- Show: Openharness Daily
- Published: 2026-08-19T12:00:32Z
- Audio duration: PT2M4S
Transcript excerpt
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Good morning. It's August 19, 2026, and this is Openharness Daily.
Today's core story is a decision point on sandbox runtime substrate. The team ran a P0 spike comparing two candidates — gVisor and MicroSandbox — and PR #803 is now the measurement record for that comparison. The verdict: gVisor work is parked. PR #804 documents that the operator paused it to focus on MicroSandbox,…
Worth noting for anyone touching this area: the gVisor host runbook moved locations between these two PRs, and the team flagged that two copies now exist and could drift. That's a small but real maintainability risk if someone edits the old copy by mistake. A task file tracks the split, but it's a reminder to check…
Second theme: housekeeping. PR #798 was a weekly task sweep — six completed tasks archived, nine still-active ones left alone, and one set of stale worktrees groomed. Nothing dramatic here, but it's the kind of regular hygiene that keeps the task backlog honest and prevents old branches from lingering.
Net effect: this is less about new features shipping and more about narrowing scope. Two competing runtime approaches went in, and the team picked a direction — MicroSandbox — while gVisor's…
What'…
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