if status is-interactive
  # Commands to run in interactive sessions can go here

  # match prompt symbol to OS logo
  if test -e /System
    set pure_symbol_prompt ""
    eval "$(/opt/homebrew/bin/brew shellenv)"
  else
    posix-source /etc/os-release
    if [ "$ID" = "nixos" ]
      set pure_symbol_prompt ""
    else if [ "$ID" = "debian" ]
      set pure_symbol_prompt ""
    else if [ "$ID" = "fedora" ]
      set pure_symbol_prompt ""
    else if [ "$ID" = "arch" ]
      set pure_symbol_prompt "󰣇"
    end
  end

  cat ~/.config/fish/pure_colours.fish | source

  set pure_enable_single_line_prompt true
  set HOMEBREW_AUTO_UPDATE_SECS 86400
  zoxide init fish | source

  # environment variables
  set -gx EDITOR nvim

  # xdg variables
  set -gx XDG_CONFIG_HOME "$HOME/.config"      # config
  set -gx XDG_CACHE_HOME "$HOME/.cache"        # cache
  set -gx XDG_DATA_HOME "$HOME/.local/share"  # data files eg. /usr/share
  set -gx XDG_STATE_HOME "$HOME/.local/state"  # state files eg. /var/lib

  # make apps use XDG folders
  set -gx PYTHON_HISTORY "$XDG_STATE_HOME"/python_history
  set -gx PYTHONPYCACHEPREFIX "$XDG_CACHE_HOME"/python
  set -gx PYTHONUSERBASE "$XDG_DATA_HOME"/python
  set -gx GOPATH "$XDG_STATE_HOME"/go
  set -gx GOMODCACHE "$XDG_CACHE_HOME"/go/mod
  set -gx NPM_CONFIG_USERCONFIG "$XDG_CONFIG_HOME"/npm/npmrc

  function wget --wraps=wget
    wget --hsts-file="$XDG_STATE_HOME/wget-hsts" $argv
  end

end