dr. Sybren A. Stüvel

dr. Sybren A. Stüvel

Open Source software developer, photographer, drummer


Hi, I’m Sybren Stüvel. I work as Blender developer, where I oversee the Animation module, and work on pipeline tooling, the dependency graph, and the integration of various file formats. Apart from my work on Blender, I also develop various other Open Source projects, such as Python-RSA and Skyfill.

On this website you’ll also find other nerdy things, like my own DIY electronics projects, my photography stuff, and my archive of UnrealTower, my old Unreal Tournament modding site.

Recent Posts

MyPy and Blender

MyPy is a fantastic tool to do static checks of Python code. Here is the configuration I use to make it play nice with Blender add-ons.

Python-RSA 4.7 released!

This new release of Python-RSA come with two security fixes and declares support for Python 3.9.

Locally re-pulling a Blender patch

For patch reviews I often need to fetch a newer version of a patch I’ve fetched before. This was a bit tedious, so I made myself a shell function that makes this super simple.

Toggle Blender's Build Options

A shell script for toggling some of Blender’s build options, so that I can get it built faster for my day-to-day coding work.


After downloading maps from Beat Savior, it was a hassle to unzip the files into sensibly-named directories. So I automated the process.