Topic

Build Systems

All digests tagged Build Systems

· 34:18

FORGET Loop Engineering. Agentic Engineering is about THIS

The video argues that 'Loop Engineering' is an insufficient and inaccurate mental model for modern software development with AI agents. The superior approach is **Agentic Engineering**, which focuses on building complex AI developer workflows (ADWs) within a 'software factory.' These ADWs orchestrate three core actors of value creation—Engineers, Agents, and Code—to automate the entire development lifecycle, from planning to deployment, thereby scaling impact and accelerating development far beyond what simple loops can achieve.

Key takeaways

  1. Shift Focus from Loops to Workflows

    Loop engineering is a poor rebrand of the Software Development Life Cycle (SDLC). The focus must be on building comprehensive AI developer workflows that combine code execution with agents, rather than focusing solely on iterative loops.

  2. The Three Actors of Value Creation 2:00

    Successful agentic engineering requires understanding and strategically placing three actors: the human engineer, specialized AI agents, and deterministic code. Code is highlighted as the most reliable actor because it costs zero tokens and runs consistently.

  3. Scaling Developer Workflows 4:00

    Advanced workflows move beyond simple loops by integrating multiple validation steps (e.g., linting, type checking, formatting) and scaling compute through specialized sandboxes for parallel execution. This process is the core of building a 'software factory.'

  4. Meta-Engineering: Building the System 8:00

    The most valuable engineering effort is not working on the application layer, but performing meta-work on the agentic layer—building the system that orchestrates and manages all other components (the 'system that builds the system').

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· 1:02:49

PLANS For Fable 5: Rebuilding My /Plan Skill for Mythos Class Models

This deep-dive devlog details the rebuilding of a comprehensive `/plan` meta skill (`PlanF3`) designed for next-generation Large Language Models (LLMs) like Fable 5 and Mythos class models. The core thesis is that superior engineering results depend on rigorous, upfront planning—a concept termed 'great planning is great engineering.' By investing heavily in structured templates, the speaker creates a meta skill that forces agents to output highly detailed, standardized plans in HTML format, thereby improving performance over speed or cost (the 'trade-off trifecta'). The resulting plan acts as a living artifact for the entire codebase, integrating complex workflows like image generation and agent-to-agent communication.

Key takeaways

  1. The Importance of Planning in Agentic Engineering 2:00

    Planning is identified as the single most critical tool an engineer has. The speaker warns against outsourcing thinking or planning to models, arguing that detailed, structured plans are necessary for end-to-end control and reliable results at scale.

  2. The PlanF3 Meta Skill Architecture 4:00

    The new skill is designed to be a 'meta skill'—a prompt that creates other prompts or skills. It mandates structured output in HTML format, which is preferred for its ability to convey rich information and utilize tokens efficiently across the 'trifecta' of users: human engineers, engineering teams, and AI agents.

  3. Structured Planning as an Artifact 7:30

    The plan is treated as a living artifact containing mandatory sections like Purpose, Problem, Solution (P/S/R), Relevant Files (existing and new), Implementation Phases (with embedded checklists), Testing Strategy, and detailed Metadata Headers (tracking agent name, session ID, back/forward references).

  4. Advanced Workflow Integration 11:20

    The skill is modularized into dedicated workflows: `create plan`, `update plan`, `update references`, `build plan`, and `image generation`. This structure allows for complex, multi-step processes (e.g., running a build cycle that updates status markers in the plan).

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