Installing to a users home. I.e. no sudo needed for package management. For example I currently install all my python, R and Haskell stuff in my home using each

Installing to a users home. I.e. no sudo needed for package management. For example I currently install all my python, R and Haskell stuff in my home using each languages' own package management rather than system wide and it would be nice to use the same package manager for all this. Up to date versions of packages. Some packages conflict in the repos e.g. ffmpeg and libav on Debian derivatives and keeping both is annoying. I would rather something like Nix or Guix over this (and as you say standardisation between package managers would be massive). In short linux package management is great but it could be so much better and this might be a kick in the right direction?