How is the state of nix support for fish shell?

Sorry about that, I was not clear at my question. My concern is about the installation. For example, following the official installation instructions gives me this error:

➜  ~ sh <(curl -L https://nixos.org/nix/install) --daemon
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100  2490  100  2490    0     0   6029      0 --:--:-- --:--:-- --:--:--  6029
fish: Invalid redirection target:
sh <(curl -L https://nixos.org/nix/install) --daemon
   ^
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