nix/modules/home-manager/wezterm/config.lua

local wezterm = require'wezterm'

-- rough duplication of colors.nix and font values from flake.nix
FONT = {
  name = "IosevkaLyteTerm";
  size = 12.0;
}

COLORS = {
};

local config = {}

if wezterm.config_builder then
  config = wezterm.config_builder()
end

local font_spec = { family = FONT.name, weight = 'Medium', italic = false }
local font_size = FONT.size;

local font = wezterm.font_with_fallback{
  font_spec,
  { family = 'Symbols Nerd Font Mono', weight = 'Regular', italic = false },
  'Noto Color Emoji',
}

-- config.disable_default_key_bindings = true
config.default_cursor_style = 'BlinkingBar'

config.font = font
config.font_size = font_size

config.hide_tab_bar_if_only_one_tab = true
config.use_fancy_tab_bar = false
config.tab_bar_at_bottom = false
config.window_background_opacity = 1.0
config.enable_kitty_keyboard = true

-- config.window_frame.font = config.font
-- config.window_frame.font_size = font_size

local function tab_title(tab_info)
  local title = tab_info.tab_title
  if title and #title > 0 then
    return title
  end
  return tab_info.active_pane.title
end

-- wezterm.on('format-tab-title', function (tab, tabs, panes, config, hover, max_width)
wezterm.on('format-tab-title', function (tab, _, _, _, _, max_width)
  local title = tab_title(tab)
  return ' ' .. string.sub(title, 0, max_width - 2) .. ' '
end)

-- TODO: port colors
config.colors = {
  foreground = '${fg}',
  background = '${bg}',
  cursor_bg = '${text}',
  cursor_fg = '${bg}',
  cursor_border = '${text}',

  selection_fg = '${bg}',
  selection_bg = '${yellow}',

  scrollbar_thumb = '${bg2}',

  split = '${bg5}',

  ansi = {
    '${colors.withHashPrefix."0"}',
    '${colors.withHashPrefix."1"}',
    '${colors.withHashPrefix."2"}',
    '${colors.withHashPrefix."3"}',
    '${colors.withHashPrefix."4"}',
    '${colors.withHashPrefix."5"}',
    '${colors.withHashPrefix."6"}',
    '${colors.withHashPrefix."7"}',
  },
  brights = {
    '${colors.withHashPrefix."8"}',
    '${colors.withHashPrefix."9"}',
    '${colors.withHashPrefix."10"}',
    '${colors.withHashPrefix."11"}',
    '${colors.withHashPrefix."12"}',
    '${colors.withHashPrefix."13"}',
    '${colors.withHashPrefix."14"}',
    '${colors.withHashPrefix."15"}',
  },

  tab_bar = {
    background = '${bg3}',

    active_tab = {
      bg_color = '${primary}',
      fg_color = '${bg}',
      italic = false,
    },
    inactive_tab = {
      bg_color = '${bg2}',
      fg_color = '${fgdim}',
      italic = false,
    },
    inactive_tab_hover = {
      bg_color = '${bg3}',
      fg_color = '${primary}',
      italic = false,
    },
    new_tab = {
      bg_color = '${bg2}',
      fg_color = '${fgdim}',
      italic = false,
    },
    new_tab_hover = {
      bg_color = '${bg3}',
      fg_color = '${primary}',
      italic = false,
    },
  },

  -- Arbitrary colors of the palette in the range from 16 to 255
  indexed = { [136] = '#af8700' },

  -- Since: 20220319-142410-0fcdea07
  -- When the IME, a dead key or a leader key are being processed and are effectively
  -- holding input pending the result of input composition, change the cursor
  -- to this color to give a visual cue about the compose state.
  compose_cursor = 'orange',

  -- Colors for copy_mode and quick_select
  -- available since: 20220807-113146-c2fee766
  -- In copy_mode, the color of the active text is:
  -- 1. copy_mode_active_highlight_* if additional text was selected using the mouse
  -- 2. selection_* otherwise
  copy_mode_active_highlight_bg = { Color = '#000000' },
  -- use `AnsiColor` to specify one of the ansi color palette values
  -- (index 0-15) using one of the names "Black", "Maroon", "Green",
  --  "Olive", "Navy", "Purple", "Teal", "Silver", "Grey", "Red", "Lime",
  -- "Yellow", "Blue", "Fuchsia", "Aqua" or "White".
  copy_mode_active_highlight_fg = { AnsiColor = 'Black' },
  copy_mode_inactive_highlight_bg = { Color = '#52ad70' },
  copy_mode_inactive_highlight_fg = { AnsiColor = 'White' },

  quick_select_label_bg = { Color = 'peru' },
  quick_select_label_fg = { Color = '#ffffff' },
  quick_select_match_bg = { AnsiColor = 'Navy' },
  quick_select_match_fg = { Color = '#ffffff' },
}


config.inactive_pane_hsb = {
  saturation = 0.8,
  brightness = 0.7,
}

config.keys = {
  {
    key = 'Insert',
    mods = 'SHIFT',
    action = wezterm.action.PasteFrom'Clipboard'
  },
  {
    key = 'v',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.PasteFrom'PrimarySelection'
  },
  {
    key = 't',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.SpawnTab'CurrentPaneDomain'
  },
  {
    key = 'h',
    mods = 'CTRL',
    action = wezterm.action.ActivatePaneDirection'Left'
  },
  {
    key = 'l',
    mods = 'CTRL',
    action = wezterm.action.ActivatePaneDirection'Right'
  },
  {
    key = 'k',
    mods = 'CTRL',
    action = wezterm.action.ActivatePaneDirection'Up'
  },
  {
    key = 'j',
    mods = 'CTRL',
    action = wezterm.action.ActivatePaneDirection'Down'
  },
  {
    key = 'j',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.SplitVertical{domain='CurrentPaneDomain'}
  },
  {
    key = 'l',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.SplitHorizontal{domain='CurrentPaneDomain'}
  },
  {
    key = 'k',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.SplitVertical{args={'top'},domain='CurrentPaneDomain'}
  },
  {
    key = 'h',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.SplitHorizontal{args={'right'},domain='CurrentPaneDomain'}
  },
  {
    key = 'p',
    mods = 'CTRL|SHIFT',
    action = wezterm.action.ActivateCommandPalette
  },
  {
    key = 'l',
    mods = 'CTRL|SHIFT|ALT',
    action = wezterm.action.ShowDebugOverlay
  },
  {
    key = 'r',
    mods = 'CTRL|SHIFT|ALT',
    action = wezterm.action.RotatePanes'Clockwise'
  },
}

-- config.unix_domains = {
  -- {
    -- name = 'unix',
    -- local_echo_threshold_ms = 10,
  -- },
-- }

-- config.default_gui_startup_args = { 'connect', 'unix' }
-- config.default_domain = 'unix'

config.window_padding = {
  top = '0.5cell',
  bottom = '0.5cell',
  left = '1cell',
  right = '1cell',
}

return config