It's been a month or two since I (re) discovered the nix package manager (and operating system).
It got me down a rabbit hole for a few weeks, before things finally settled down.
I loved that I could declare the software I wanted installed on any distro (I have machines with Ubuntu, Arch, Nixos atm). I use home-manager and the same home manager config across machines using chezmoi, so that way all cool command line tools (I'm using distro packages/flatpak for graphical for now) are installed painlessly everywhere.
Big shout-out to nix!