It doesn't need one, but I am asking if there is one. Or if there isn't, what else they are basing it on (the answer could be anything from personal anecdotes to actual data; that's what I'd like to know).
Increasingly flake.nix is present in good repos. Zillions of packages are available. But yes, you will need to learn and sometimes File System Hierarchy assumptions need to be worked around. The rewards however, dominate the (few) inconveniences once you know your way around.
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