Comment by secure

Customizing packages is something I do occasionally to debug FOSS. I don’t recall which package I wanted to debug, but I remember that I gave up after my laptop was compiling for many hours. Any changes to one NixOS package automatically invalidate all of its reverse-dependencies, which isn’t the case with e.g. Debian, where I can, when deeming it safe, rebuild a package and install it over the currently installed version.