{
  programs.bash = {
    enable = true;
    enableCompletion = true;

    sessionVariables = {
      GPG_TTY = "$(tty)";
      PROMPT_DIRTRIM = "3";
    };

    shellAliases = {
      "ff" = "${./bin/ff.sh}";
      "ipl" = "ifconfig | grep \"inet \" | grep -v 127.0.0.1 | awk '{print $2}' | head -n 1";
      "ipp" = "curl -4 ifconfig.me";
      "lg" = "lazygit";
      "g" = "git";
      "xsrc" = "source ~/.bashrc && source .bash_profile";
    };

    profileExtra = ''
      export PATH=\
      /run/current-system/sw/bin:\
      /opt/homebrew/bin:$PATH
    '';

    bashrcExtra = ''
      # FNM
      eval "$(fnm env --use-on-cd --shell bash)"
      
      # emacs-libvterm
      if [[ "$INSIDE_EMACS" = 'vterm' ]] \
        && [[ -n "$EMACS_VTERM_PATH" ]] \
        && [[ -f "$EMACS_VTERM_PATH/etc/emacs-vterm-bash.sh" ]]; then
        source "$EMACS_VTERM_PATH"
      fi
    '';

    initExtra = ''
      if [ -n "$INSIDE_EMACS" ]; then
        PS1="[\u@\h:\w]\\$ "
      else
        PROMPT_COMMAND="PS1_CMD1=$(git branch --show-current 2>/dev/null)'; PS1='\u@\h \[\e[96m\]\w\[\e[0m\] (\[\e[95m\]$PS1_CMD1\[\e[0m\])\n\[\e[96m\]λ\[\e[0m\] "
      fi
    '';
  };
}