Teaching an AI to Know Itself: Building a Local LLM Agent in D

I’ve been writing D for a long time. DaNode , my self-contained web server, has been running in production for over 12 years. DImGui is a full SDL + Vulkan renderer that supports skeletal animations via the Open Asset Import Library, HDR lighting, and compute shaders, written entirely in D calling into external libraries via ImportC . So when I decided to build a local agentic large language model (LLM) ( DLLM ) from scratch, I’d sooner write it in Brainfuck than reach for Python. To be fair, the Python LLM