claudebox/.planning/quick/260410-d4u-on-non-nixos-hosts-bwrap-fails-because-e/260410-d4u-PLAN.md
2026-04-10 09:46:51 +02:00

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---
phase: quick
plan: 260410-d4u
type: execute
wave: 1
depends_on: []
files_modified: [claudebox.sh]
autonomous: true
must_haves:
truths:
- "claudebox launches successfully on non-NixOS Linux hosts where /etc/static does not exist"
- "claudebox still mounts /etc/static on NixOS hosts where it does exist"
- "dry-run output reflects the conditional mount accurately"
artifacts:
- path: "claudebox.sh"
provides: "Conditional /etc/static mount"
contains: "etc/static"
---
<objective>
Fix bwrap failure on non-NixOS hosts caused by unconditional `--ro-bind /etc/static /etc/static`.
Purpose: `/etc/static` is NixOS-specific. On Ubuntu, Fedora, Arch, etc. this path does not exist and bwrap exits with an error, making claudebox unusable on non-NixOS Linux.
Output: claudebox.sh conditionally includes the /etc/static mount only when the path exists.
</objective>
<execution_context>
@$HOME/.claude/get-shit-done/workflows/execute-plan.md
@$HOME/.claude/get-shit-done/templates/summary.md
</execution_context>
<context>
@claudebox.sh
</context>
<tasks>
<task type="auto">
<name>Task 1: Conditionally mount /etc/static only when it exists</name>
<files>claudebox.sh</files>
<action>
Build a `CONDITIONAL_MOUNTS` array before the dry-run block (around line 284, after SANDBOX_CMD is set). Populate it conditionally:
```bash
# Conditional mounts for NixOS-specific paths
CONDITIONAL_MOUNTS=()
if [[ -d /etc/static ]]; then
CONDITIONAL_MOUNTS+=(--ro-bind /etc/static /etc/static)
fi
```
Then splice `"${CONDITIONAL_MOUNTS[@]}"` into both:
1. **Dry-run output (line ~309):** Replace the hardcoded `echo " --ro-bind /etc/static /etc/static \\"` with a loop over CONDITIONAL_MOUNTS that prints them in the same format:
```bash
local cm_i=0
while (( cm_i < ${#CONDITIONAL_MOUNTS[@]} )); do
echo " ${CONDITIONAL_MOUNTS[$cm_i]} ${CONDITIONAL_MOUNTS[$((cm_i+1))]} ${CONDITIONAL_MOUNTS[$((cm_i+2))]} \\"
(( cm_i += 3 ))
done
```
2. **exec bwrap (line ~339):** Replace `--ro-bind /etc/static /etc/static \` with `"${CONDITIONAL_MOUNTS[@]}" \` in the exec call.
This keeps the pattern simple -- one array, two splice points. No other mounts are affected.
</action>
<verify>
<automated>bash -n claudebox.sh && echo "syntax ok"</automated>
</verify>
<done>
- `bash -n claudebox.sh` passes (no syntax errors)
- /etc/static mount is conditional on directory existence
- Both dry-run and exec paths use the same CONDITIONAL_MOUNTS array
- No other mounts are changed
</done>
</task>
</tasks>
<verification>
- `bash -n claudebox.sh` passes
- On NixOS: `claudebox --dry-run` output includes `--ro-bind /etc/static /etc/static`
- On non-NixOS: `claudebox --dry-run` output omits the /etc/static line entirely
</verification>
<success_criteria>
claudebox.sh no longer fails on hosts without /etc/static, while preserving the mount on NixOS.
</success_criteria>
<output>
After completion, create `.planning/quick/260410-d4u-on-non-nixos-hosts-bwrap-fails-because-e/260410-d4u-SUMMARY.md`
</output>