Until Nix gets some kind of concept approximating interfaces such that the compiler can tell me "hey, you're missing this field to meet this interface" or "the

Until Nix gets some kind of concept approximating interfaces such that the compiler can tell me "hey, you're missing this field to meet this interface" or "the shape of the argument for this thing is blah", it will remain a horrible experience in the same way that an exotic Ruby codebase is a horrible experience. Everything is based on convention or code you have to go spelunking for.