Respectfully, I'd like to nominate "Heck, even if you want it more easy, you could write a tool in less than 100 lines that adds packages names to .json/.yaml/.toml, which allows you to parse it using the nix language and a simple cli written with bash functions to add/remove packages if you wanted." as the next "why would you need dropbox" comment ( https://news.ycombinator.com/item?id=9224 ).
