Terminal Configuration

Terminal emulator configs live in home/terminal/.

Configuration Files

code

home/terminal/
  default.nix      # Aggregates all terminal configs
  ghostty.nix      # Ghostty terminal
  kitty.nix        # Kitty terminal
  starship.nix     # Starship prompt
  atuin.nix        # Shell history
  bat.nix          # Cat replacement with syntax highlighting
  cli-tools.nix    # CLI utilities (eza, ripgrep, etc.)
  dev-tools.nix    # Development tools (git, direnv)

Ghostty Configuration

Ghostty uses a plain text config file:

nix

# home/terminal/ghostty.nix
{ pkgs, ... }: {
  home.packages = [ pkgs.ghostty ];

  xdg.configFile."ghostty/config".text = ''
    # Font
    font-family = JetBrainsMono Nerd Font
    font-size = 12

    # Window
    window-padding-x = 8
    window-padding-y = 4
    gtk-titlebar = true
    gtk-single-instance = true

    # Theme
    theme = catppuccin-mocha
    background-opacity = 0.95

    # Shell integration
    shell-integration = detect
    shell-integration-features = cursor,sudo,title

    # Show working directory in title bar
    window-subtitle = working-directory

    # Keybinds
    keybind = global:ctrl+grave_accent=toggle_quick_terminal
  '';
}

Key Ghostty Settings

Setting	Purpose
`window-subtitle = working-directory`	Show PWD in window title
`gtk-titlebar = true`	Show GTK header bar
`gtk-single-instance = true`	Reuse existing Ghostty instance
`shell-integration-features`	Enable cursor, sudo, title updates
`background-opacity`	Transparency (0.0-1.0)

Ghostty + niri CSD

For Ghostty's title bar to show in niri, enable client-side decorations:

nix

# home/desktop/wm/niri/default.nix
programs.niri.settings = {
  prefer-no-csd = false;  # Allow apps to draw title bars
};

Kitty Configuration

nix

# home/terminal/kitty.nix
{ ... }: {
  programs.kitty = {
    enable = true;
    font = {
      name = "JetBrainsMono Nerd Font";
      size = 12;
    };
    theme = "Catppuccin-Mocha";
    settings = {
      background_opacity = "0.95";
      window_padding_width = 8;
      enable_audio_bell = false;
      hide_window_decorations = "no";
    };
  };
}

Starship Prompt

nix

# home/terminal/starship.nix
{ ... }: {
  programs.starship = {
    enable = true;
    enableBashIntegration = true;

    settings = {
      format = ''
        $directory$git_branch$git_status$nix_shell$cmd_duration
        $character
      '';
      add_newline = false;

      directory = {
        truncation_length = 3;
        truncate_to_repo = true;
        style = "bold cyan";
      };

      git_branch = {
        format = "[$branch]($style) ";
        style = "bold purple";
      };

      nix_shell = {
        symbol = "❄️ ";
        style = "bold blue";
      };

      character = {
        success_symbol = "[❯](bold green)";
        error_symbol = "[❯](bold red)";
      };
    };
  };
}

Shell Aliases

Define in home/terminal/default.nix:

nix

home.shellAliases = {
  cat = "bat";
  ls = "eza";
  ll = "eza -la";
};

Adding New Terminal

•Create home/terminal/<terminal>.nix
•Add to home/terminal/default.nix imports
•Rebuild: ./scripts/dev-sync rebuild

Verification

After rebuild, check config was applied:

bash

# Ghostty
cat ~/.config/ghostty/config

# Starship
starship config

terminal-config