Posts from Jan 2026

Zettelkasten for Programmers: Documenting Confusing with Swift.SendableMetatype

I got terribly confused reading the API docs on th SendableMetatype protocol. Because I do not yet know the solution, I want to share how I store this in my Zettelkasten for future problem-solving and discussions.

Use clang API notes to Annotate C Header Files for Swifty Module Imports

Doug Gregor shows how to use clang to import a C library with header files that you don’t own in a way that produces very ergonomic Swift APIs with annotations in YAML files.

Auto-Mount Metal Toolchain Using a Launch Service Because Xcode 26 Cannot

Xcode 26 is incapable of compiling Metal shaders on my machine, so I need to help out to mount the appropriate toolchain with a Launch Service

Manually Mount the Metal Toolchain When Xcode Cannot

My computer suffers from Xcode not being able to access the Metal toolchain that is clearly installed on my system. I need to mount the disk image manually to fix this and make the CompileMetalFile error go away.

Emacs Carnival 2026-01: “This Year, I’ll …”

I’m hosting this month’s Emacs Carnival. Submit your blog posts on the topic “This Year, I’ll …”, Emacs-related new-year resolutions in January to participate.

Announcing the German Urban Sketchers Index

The unofficial Urban Sketchers Germany index got a webdesign, interactive map and filters to show the 85 groups that we now know of.