One reason I like NixOS/guix is that they lay the groundwork for "Linux ecosystem"-wide integration testing. They (build-)architecturally tackle the problems of

One reason I like NixOS/guix is that they lay the groundwork for "Linux ecosystem"-wide integration testing. They (build-)architecturally tackle the problems of the highly asynchronous nature of Linux software development, which should eventually increase software (integration) quality. In theory one could eventually build other distros on top of these. I think there's a lot to look forward to ;)