Personal projects · research · notes
Tools, experiments
& things I’m building.
I’m Daniel Halwell. I build presentation tools, agent workspaces, compilers, Apple container tooling and experimental models, with a background in chemistry.
17 results
Current projects
power-pptxPython tools for generating editable PowerPoint decks, with text fitting, layout checks and diagram recipes.Active development
TyphonA strict, statically typed Python dialect and compiler written in Rust.Active development
CodypendentA local-first coding workspace with a shared Rust daemon, terminal and desktop clients.Active development
OstinatoLooping transformer research combining reused decoder blocks, sparse mixture-of-experts and Muon optimisation.Research in progress
EluteDiffMolecule-conditioned diffusion research for predicting HPLC retention-time distributions.Research in progress
Son of AntonA Code OSS-based editor with a shared agent runtime, task board, checkpoints and a native code graph.Active development
Fly brain · hotdog or not hotdogA fly-connectome experiment exploring recurrent networks, reinforcement learning and hotdog recognition.Research in progress
Container DesktopA native Rust and Tauri desktop manager for Apple containers, with Compose workflows and a companion CLI.Active developmentOther projects
Agent-Gantry & ADAPT-AgentTool selection, controlled execution and policy boundaries for agent systems.Libraries & experiments
Language model experimentsRecursive architectures, adaptive computation and coding-model fine-tuning.Research in progress
Scientific machine learningConnecting chemistry, molecular graphs and spectral modelling.Research in progress
Shallow Research Code AssistantA research-to-code workflow with Gradio, MCP and Modal sandboxes.Hackathon project
HalwellOSAn explorable portfolio with one content source for a desktop, terminal and plain reading pages.LiveResearch
Blog
Building this websiteMarkdown, a virtual filesystem and a desktop shell make one portfolio accessible through several interfaces.Evals are the productDefine the outcome, keep a comparable baseline and inspect the traces behind a score.Engineering noteAgents need boring infrastructureSession ownership, execution boundaries and recovery make an agent useful beyond its first successful response.Engineering note