Hacker News: ajpaulsonhttps://news.ycombinator.com/user?id=ajpaulsonHacker News RSShttps://hnrss.org/hnrss v2.1.1Sun, 07 Jun 2026 20:38:55 +0000<![CDATA[New comment by ajpaulson in "Harness engineering: Leveraging Codex in an agent-first world"]]>> The diagram below shows the rule: within each business domain (e.g. App Settings), code can only depend “forward” through a fixed set of layers (Types → Config → Repo → Service → Runtime → UI). Cross-cutting concerns (auth, connectors, telemetry, feature flags) enter through a single explicit interface: Providers. Anything else is disallowed and enforced mechanically.

Can anyone give me a simplified explanation of what they’re saying here? Having some trouble understanding.

]]>Sun, 07 Jun 2026 04:30:08 +0000https://news.ycombinator.com/item?id=48431801ajpaulsonhttps://news.ycombinator.com/item?id=48431801https://news.ycombinator.com/item?id=48431801<![CDATA[New comment by ajpaulson in "Rob Pike’s Rules of Programming (1989)"]]>I think I’m going to copy and paste this directly into my AGENTS.md file!

]]>Wed, 18 Mar 2026 13:44:46 +0000https://news.ycombinator.com/item?id=47425744ajpaulsonhttps://news.ycombinator.com/item?id=47425744https://news.ycombinator.com/item?id=47425744