- Install Nix using https://github.com/DeterminateSystems/nix-installer#determinate-nix-installer, avoid Determinate Nix.
- Install Homebrew with
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)". - Install, run, and switch with nix-darwin using
sudo nix run nix-darwin/nix-darwin-25.05#darwin-rebuild -- switch --flake github:uncenter/flake#katara. - Edit
/etc/shellsto add/run/current-system/sw/bin/fishon the last line, then runchsh -s /run/current-system/sw/bin/fish.