Sandbox should create $TMPDIR directory automatically
Status Closed — not planned
Maintainer reply None cached
Workaround ✓ Mentioned in description ↑
Activity 1 comment · opened Apr 17, 2026 · closed Apr 17, 2026
Summary
When sandbox is enabled, Claude Code sets TMPDIR=/tmp/claude but does not create this directory. This causes tools like just (and any command that writes temp files) to fail with:
IO error while trying to create a temporary directory: No such file or directory (os error 2) at path "/tmp/claude/just-fFRcbs"Expected behavior
The sandbox should ensure $TMPDIR exists before executing any commands, since it's the sandbox that sets this non-standard path.
Current workaround
Adding mkdir -p /tmp/claude as a SessionStart hook.
Environment
- macOS (Darwin 25.2.0, arm64)
- Claude Code with sandbox enabled
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