---
title: "75k lines of Rust later, here is what I’ve built during the first Christmas with agents, using..."
date: 2026-01-03
canonical: https://solmaz.io/x/2007395676347310173/
x_url: https://x.com/onusoz/status/2007395676347310173
license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
---

75k lines of Rust later, here is what I’ve built during the first Christmas with agents, using OpenAI Codex 🎄🤖

- A full mobile rewrite and port of my Python Instagram video production pipeline (single video production time: 1hr -> 5min) (ig: nerdonbars)
- Bespoke animation engine using primitives (think Adobe Flash, Manim)
- Proprietary new canvas UI library in Rust, because I don’t want to lock myself into Swift
- Thanks to that, it’s cross platform, runs both on desktop and iOS. It will be a breeze porting this to Android when the time comes
- A Rust port of OpenCV CSRT algorithm, for tracking points/objects
- In-engine font rendering using rustybuzz, so fonts render the same everywhere
- Many other such things

Why would I choose to do it that way? Because I have developed it primarily on desktop where I have much faster iteration speed. Aint nobody got time for iOS compilation and simulator. Once I finished the hard part on desktop, porting to iOS was much easier, and I didn’t lock myself in to Apple

Some of these would have been unimaginable without agents, like creating a UI library from scratch in Rust. But when you have infinite workforce, you can ask for crazy things like “create a textbox component from scratch”

What I’ve built is very similar in nature to CapCut, except that I am a single person and I’ve built it over 1 week

What have you built this Christmas with agents?

cc @thsottiaux