miniblog.

Thoughtful article about building older software with Nix: https://blinry.org/nix-time-travel/ It's striking how a project that does so much excellent work on build reproducibility still has some build errors in this scenario. Bitrot is scary.

Here's a scary example from the tree-sitter-c bug tracker: before running the preprocessor, there's no guarantee that C code will parse! (Typically it will I think, but no guarantees.)

Integration tests are inherently scary. You want to make them as similar as possible to your production environment, which massively increases the risk that one day they will talk to production directly.