{ pkgs, ... }: {
  enable = true;
  package = pkgs.fish;
  interactiveShellInit = ''
    echo 'ヽ(´ᗜ｀)ノ welcome ヽ(´ᗜ｀)ノ'
    if not functions -q fisher
      set -q XDG_CONFIG_HOME; or set XDG_CONFIG_HOME ~/.config
      curl https://git.io/fisher --create-dirs -sLo $XDG_CONFIG_HOME/fish/functions/fisher.fish
      fish -c fisher
    end
    fish_vi_key_bindings
    set VIRTUAL_ENV_DISABLE_PROMPT true

    alias cat=bat
    alias br=broot
    alias tree=br
    alias ack=rg
    alias ag=rg
    alias grep=rg

    alias sys="sudo systemctl"

    alias rebuild="sudo nixos-rebuild switch"
    alias rebuildd="sudo nixos-rebuild switch; and systemctl restart display-manager"
    alias upgrade="sudo rm -rf /root/.cache/nix/tarballs; and sudo nix-channel --update; and sudo nixos-rebuild switch --upgrade"

    alias clip="xclip -selection c"

    alias cxuse="sudo cachix use -d ~/dotfiles.nix"
    alias cxpsh="nix-shell --command exit; nix-store -qR --include-outputs (nix-instantiate shell.nix) | cachix push"
    alias cxpush=cxpsh

    function config -a file
      if test -z "$file"
        set file configuration
      end
      vim ~/dotfiles.nix/$file.nix +'cd %:p:h'
    end

    alias vims="vim -S Session.vim"

    alias bigscreen="xrandr --output eDP1 --off --output HDMI2 --auto"
    alias smallscreen="xrandr --output eDP1 --auto --output HDMI2 --off"

    function tmux-ssh -a user -a host
      set target "$user@$host"
      set session "$user-$host"
      env TERM=tmux-256color ssh $target -t "tmux -2 attach -t $session || tmux -2 new -s $session"
    end

    alias pi="tmux-ssh pi pi"
    alias mir="tmux-ssh mat mir"
    alias drop=mir
    alias soviet="tmux-ssh mat soviet"
    alias gagarin="tmux-ssh mat gagarin"
    alias yuri=gagarin
    alias gaga=gagarin

    alias wifi="nmcli r w off; nmcli r w on"

    alias nixops=~/dev/nixops/result/bin/nixops

    bind \cr 'fzy_select_history (commandline -b)'
    bind -M insert \cr 'fzy_select_history (commandline -b)'

    bind \cf 'fzy_select_directory'
    bind -M insert \cf 'fzy_select_directory'

    bind -M insert ! __history_previous_command
    bind -M insert '$' __history_previous_command_arguments
  '';
}