xdg-app is a prime example of NIH. It poorly reinvents reproducible, deterministic and isolated builds when battle-tested and academically sound solutions like

xdg-app is a prime example of NIH. It poorly reinvents reproducible, deterministic and isolated builds when battle-tested and academically sound solutions like Nix are available off the shelf. People refusing to adopt it is a good thing in my book, it'll only be harmful in the long term. The Linux community has rejected fat apps (primarily fat ELF binaries) many times, so that's not out of the ordinary. I find the idea of systemd being less NIH to be quite baffling, though. Just look at its ad-hoc LISTEN_FDs protocol rather than adopting something well designed like UCSPI.