Update 2026-07: Since this page was written, I have moved to Arch Linux mainly to avoid having to reinstall or upgrade, as Arch is rolling-release. Arch also has the advantage of having much newer software available, but setting it up is much more work (and/or for less polished results). Another reason for me was also that ubuntu/red hat are companies and have their own corporate interests, and I like more community-driven projects. I am now exclusively using community distros (debian on server and arch on desktop). One example is ubuntu pushing rust-coreutils for no reason whatsoever and then having to do a security audit and finding lots of issues. I am also not a fan of snap packages. I have to say I am finding it very productive with arch, although it’s much more rustic, I have started to appreciate things like using a terminal file manager. ...

Today, I want to show you how to link an object file produces with any compiled language into an executable using the LLVM linker lld. I will limit myself to a unix operating system and linking using the musl C standard library. Steps for other systems will be similar. ...

In the previous post, I implemented a sudoku solver. Unfortunately, it does not work yet. Let’s fix it! Debugging the solver in the current state of the code is hard. The test fails because the expected solution is not equal to the actual solution returned, but since I have no way of visualizing the Grid it’s hard to say what the difference is. ...

The code I wrote in the last post would use some refactoring. However, the tests are working, and I feel like I would be spending my time refactoring stuff that already works instead of trying to tackle the actual problem of solving a sudoku. ...

The other day, in the first post of the series, I started writing a sudoku solver with TDD. In particular, I wrote a simple Grid class to encapsulate the game’s state. I think it’s now time that we start writing a solver for the puzzle. ...

I’m going to imitate Ron Jeffries. In his series of posts, Ron tried writing a sudoku solver using TDD (Test Driven Development) to see if the methodology works and what would happen. He eventually quit the project without completing it. ...