// Implement Nix configuration changes from plans. Invoke for nix implementation tasks.
Execute general implementation tasks following a plan. Invoke for general implementation work.
Research blockers and spawn new tasks to overcome them, updating parent task dependencies
Archive completed and abandoned tasks with CHANGE_LOG.md updates and memory harvest suggestions
Execute general implementation tasks following a plan. Invoke for general implementation work.
Research blockers and spawn new tasks to overcome them, updating parent task dependencies
Archive completed and abandoned tasks with CHANGE_LOG.md updates and memory harvest suggestions
| name | skill-nix-implementation |
| description | Implement Nix configuration changes from plans. Invoke for nix implementation tasks. |
| allowed-tools | Agent, Bash, Edit, Read, Write |
Thin wrapper that delegates Nix configuration implementation to nix-implementation-agent subagent.
This skill activates when:
Validate task_number exists, task_type is "nix", and an implementation plan is present.
Update status to "implementing" BEFORE invoking subagent.
Domain-specific context for the nix-implementation-agent:
.claude/extensions/nix/context/nix flake check, nixos-rebuild build --flake .#hostname{
"session_id": "sess_{timestamp}_{random}",
"delegation_depth": 1,
"delegation_path": ["orchestrator", "implement", "skill-nix-implementation"],
"timeout": 7200,
"task_context": {
"task_number": N,
"task_name": "{project_name}",
"description": "{description}",
"task_type": "nix"
},
"plan_path": "specs/{NNN}_{SLUG}/plans/MM_{short-slug}.md",
"metadata_file_path": "specs/{NNN}_{SLUG}/.return-meta.json"
}
Use Agent tool with subagent_type: "nix-implementation-agent".
CRITICAL: If you performed the work above WITHOUT using the Agent tool (i.e., you read files,
wrote artifacts, or updated metadata directly instead of spawning a subagent), you MUST write a
.return-meta.json file now before proceeding to postflight. Use the schema from
return-metadata-file.md with the appropriate status value for this operation.
If you DID use the Agent tool, skip this stage -- the subagent already wrote the metadata.
The following stages MUST execute after work is complete, whether the work was done by a subagent or inline (Stage 4b). Do NOT skip these stages for any reason.
Read the metadata file from specs/{N}_{SLUG}/.return-meta.json.
Update state.json and TODO.md based on result.
Add artifact to state.json with summary. Update TODO.md per @.claude/context/patterns/artifact-linking-todo.md with field_name=**Summary**, next_field=**Description**.
Commit changes with session ID.
After the agent returns, this skill MUST NOT:
PROHIBITION: If the subagent returned partial or failed status, the lead skill MUST NOT attempt to continue, complete, or "fill in" the subagent's work. Report the partial/failed status and let the user re-run
/implementto resume.
The postflight phase is LIMITED TO:
Reference: @.claude/context/standards/postflight-tool-restrictions.md
Brief text summary (NOT JSON).