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feat(sandbox): probed NixOS mount table builder #16

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opened 2026-09-09 10:15:32 +00:00 by larandar · 0 comments
larandar commented 2026-09-09 10:15:32 +00:00
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Proposal

Build a Bubblewrap mount table from probed NixOS runtime paths.

Design

Probe and mount /proc, /dev, private /tmp tmpfs, /nix/store, /run/current-system/sw, and /workspace.

Tasks

  • Implement probing; build deterministic entries; fail clearly for unavailable required paths.

Gherkin Specification Delta

must.contracts.ting-workflows.deliverable-16

Scenario: Deliverable behavior

  • GIVEN the stated prerequisites and inputs
  • WHEN the feature is exercised
  • THEN a supported NixOS host, when the table is built, then required isolated and read-only mounts exist.
## Proposal Build a Bubblewrap mount table from probed NixOS runtime paths. ## Design Probe and mount /proc, /dev, private /tmp tmpfs, /nix/store, /run/current-system/sw, and /workspace. ## Tasks - Implement probing; build deterministic entries; fail clearly for unavailable required paths. ## Gherkin Specification Delta ### must.contracts.ting-workflows.deliverable-16 **Scenario: Deliverable behavior** - **GIVEN** the stated prerequisites and inputs - **WHEN** the feature is exercised - **THEN** a supported NixOS host, when the table is built, then required isolated and read-only mounts exist.
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Blocks
#2 Session: ting-workflow-executor — embedded Nushell, bwrap sandboxing, and OWS DSL 1.0
Ting/workflows
#17 feat(sandbox): sensitive path masking for .dsh-run and DSH_HOME
Ting/workflows
#18 feat(sandbox): network containment and clearenv whitelist
Ting/workflows
#20 feat(sandbox): PID 1 namespace lifecycle and orphan reaping
Ting/workflows
Reference
Ting/workflows#16
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