{ config, pkgs, ... }: {
  # Configure BASH exports
  # https://nix-community.github.io/home-manager/options.html

  # https://github.com/justjanne/powerline-go
  # https://nix-community.github.io/home-manager/options.html#opt-programs.powerline-go.enable 
  programs.powerline-go = { 
    enable = true;
    # https://github.com/justjanne/powerline-go#customization 
    settings = { 
      hostname-only-if-ssh = true;
      cwd-max-depth = 2;
      condensed = true;
      theme = "gruvbox";
     };
    modules = [ 
      "venv"
      "user"
      "host"
      "ssh"
      "cwd"
      "nix-shell"
      "perms"
      "git"
      "docker"
      "exit"
    ];
    modulesRight = [
      "root"
    ];
  };

  programs = {
    bash = {
      enable = true;
      enableCompletion = true;
      sessionVariables = {
        # Set the GTK Theme
        # GTK_THEME = "Gruvbox-Dark-BL";
        XDG_DATA_HOME = "$HOME/.local/share";
        GPG_TTY="$(tty)";
      };
      bashrcExtra = ''
        sops-edit() {
          nix-shell -p sops --run "sops $1"
        }
        sops-update() {
          nix-shell -p sops --run "sops updatekeys $1"
        }
        nix-clean-all() {
          sudo nix-channel --update
          sudo nix-env -u --always
          sudo nix-collect-garbage -d
        }
      '';
      shellAliases = {
        # Disable askpass for cli auth:
        SSH_ASKPASS = "";

        # nVidia prime selector alias:
        prime-select = "nvidia-offload";

        # Don't use X to open emacs
        emacs  = "emacs -nw";

        # docker
        d = "docker";
        dc = "docker-compose";
        de = "docker exec -it";

        # bash / system
        ls = "exa";
        cp = "rsync -avr";
        ll = "exa -lah";
        rm = "rm -i";
        df = "duf";
        
        # git
        g = "git";
        ga = "git add -A";
        gb = "git branch";
        gc = "git commit";
        gca = "git commit -a";
        gco = "git checkout";
        gd = "git diff";
        gp = "git pull --prune";
        gpu = "git push origin HEAD";
        gs = "git status -sb";

        # time / date
        tdate = "date +%Y.%m.%d..%H.%M";
        ttime = "date +%H.%M";
        ddate = "date +%Y.%m.%d";
        dday = "date +%A";

        # nixos-rebuild
        ns = "nix-shell -p";
        nr = "sudo nixos-rebuild";
        nrs = "sudo nixos-rebuild --upgrade switch";
        nrt = "sudo nixos-rebuild test";
        nrb = "sudo nixos-rebuild build";

        # Rebuild everything
        rebuild-home = "git -C /etc/nixos/git pull && home-manager switch -b backup --flake /etc/nixos/git";
        rebuild-host = "git -C /etc/nixos/git pull && sudo nixos-rebuild switch --flake /etc/nixos/git";
        rebuild-all  = "rebuild-home && rebuild-host";
      };
    };
  };
}