115 lines
3.4 KiB
Nix
115 lines
3.4 KiB
Nix
{
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config,
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pkgs,
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lib,
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...
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}:
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let
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cfg = config.programs.fish;
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in
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{
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options.programs.fish = {
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autoTheme = {
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enable = lib.mkEnableOption "Automatically change terminal and shell themes with night mode";
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light = lib.mkOption {
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type = lib.types.str;
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description = "Light mode theme";
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};
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dark = lib.mkOption {
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type = lib.types.str;
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description = "Dark mode theme";
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};
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};
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};
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config = lib.mkIf (cfg.enable && cfg.autoTheme.enable) {
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programs.fish = {
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shellInit = ''
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set -g theme_dark "${config.programs.fish.autoTheme.dark}"
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set -g theme_light "${config.programs.fish.autoTheme.light}"
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set-background-to-system
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'';
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interactiveShellInit = ''
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set-shell-colors
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set-term-colors
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'';
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functions =
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{
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# toggles `$term_background` between "light" and "dark". other Fish functions trigger when this
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# variable changes. we use a universal variable so that all instances of Fish have the same
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# value for the variable.
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toggle-background.body = ''
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if test "$term_background" = light
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set -U term_background dark
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else
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set -U term_background light
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end
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'';
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# set `$term_background` based on whether macOS is light or dark mode
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set-background-to-system.body = ''
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if is-dark-mode
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set -U term_background dark
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else
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set -U term_background light
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end
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'';
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# set `$term_background` based on an env var
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set-background-to-env = {
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argumentNames = [ "env_var" ];
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body = ''
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switch $$env_var
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case 1
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echo "Setting dark mode"
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set -U term_background dark
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case 0
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echo "Setting light mode"
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set -U term_background light
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end
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'';
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};
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# sets shell utilities to light or dark colorscheme based on `$term_background`.
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set-shell-colors = {
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body = ''
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# Use correct theme for `btm` and `bat`
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if test "$term_background" = light
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alias btm "btm --color nord-light"
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set -xg BAT_THEME OneHalfLight
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else
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alias btm "btm --color nord"
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set -xg BAT_THEME OneHalfDark
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end
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# Set LS_COLORS
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set -xg LS_COLORS (${pkgs.vivid}/bin/vivid generate one-$term_background)
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'';
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onVariable = "term_background";
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};
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# use theme.sh to update terminal colors
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set-term-colors = {
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body = ''
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set -l theme theme_$term_background
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theme.sh $$theme
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'';
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onVariable = "term_background";
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};
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# do i need to implement for linux?
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is-dark-mode = abort "is-dark-mode is not defined on ${pkgs.stdenv.system} yet.}";
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}
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// lib.optionalAttrs pkgs.stdenv.isDarwin {
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# determine if dark mode is active
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is-dark-mode.body = ''
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defaults read -g AppleInterfaceStyle &>/dev/null
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'';
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};
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shellAbbrs = {
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tb = "toggle-background";
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sb = "set-background-to-system";
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};
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};
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};
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}
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