And yes, coreutils is a great example of what I mean. The GNU project was always meant to be the basis for a production grade operating system. I mean, GNU Hello is just a hello world program, and its source weighs in at 707kB zipped (or 3.6MB unzipped). The purpose is having a trivial application that can serve as reference for all the standard practices of the GNU Project. No amount of writing things in Rust can replace the engineering mentality that leads to GNU Hello existing. In comparison, as I understand it uutils was first and foremost an educational project that got coopted into being used in production. Things are very much not alike here.