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1{ pkgs, ... }:
2let
3
4 switch-theme = pkgs.writers.writeDashBin "switch-theme" ''
5 set -efux
6 if [ "$1" = toggle ]; then
7 if [ "$(${pkgs.coreutils}/bin/cat /var/theme/current_theme)" = dark ]; then
8 ${placeholder "out"}/bin/switch-theme light
9 else
10 ${placeholder "out"}/bin/switch-theme dark
11 fi
12 elif test -e "/etc/themes/$1"; then
13 ${pkgs.coreutils}/bin/mkdir -p /var/theme/config
14 ${pkgs.rsync}/bin/rsync --chown=lass:users -a --delete "/etc/themes/$1/" /var/theme/config/
15 echo "$1" > /var/theme/current_theme
16 ${pkgs.coreutils}/bin/chown lass:users /var/theme/current_theme
17 ${pkgs.xorg.xrdb}/bin/xrdb -merge /var/theme/config/xresources || : # wayland has no xresources
18 ${pkgs.procps}/bin/pkill -HUP xsettingsd || :
19 set +f
20 GSETTINGS_SCHEMA_DIR=$(echo /run/current-system/sw/share/gsettings-schemas/*/*/schemas | sed s', ,:,g')
21 export GSETTINGS_SCHEMA_DIR
22 set -f
23 ${pkgs.glib}/bin/gsettings set org.gnome.desktop.interface gtk-theme "$(cat /var/theme/config/gtk-theme)" || :
24 ${pkgs.glib}/bin/gsettings set org.gnome.desktop.interface color-scheme "prefer-$1" || :
25 else
26 echo "theme $1 not found"
27 fi
28 '';
29
30in
31{
32 systemd.tmpfiles.rules = [
33 "d /var/theme/ 755 lass users"
34 ];
35 environment.systemPackages = [
36 switch-theme
37 pkgs.dracula-theme
38 pkgs.adwaita-icon-theme
39 ];
40 environment.etc = {
41 "themes/light/gtk-theme".text = ''
42 Adwaita
43 '';
44 "themes/light/xsettings.conf".text = ''
45 Net/ThemeName "Adwaita"
46 '';
47 "themes/light/xresources".text = ''
48 *background: #ffffff
49 *foreground: #000000
50 '';
51 "themes/dark/gtk-theme".text = ''
52 Dracula
53 '';
54 "themes/dark/xsettings.conf".text = ''
55 Net/ThemeName "Dracula"
56 '';
57 "themes/dark/xresources".text = ''
58 *background: #000000
59 *foreground: #ffffff
60 '';
61 };
62 # system.activationScripts.theme.text = ''
63 # export DISPLAY=:0
64 # if test -e /var/theme/current_theme; then
65 # ${switch-theme}/bin/switch-theme "$(cat /var/theme/current_theme)" ||
66 # ${switch-theme}/bin/switch-theme dark
67 # else
68 # ${switch-theme}/bin/switch-theme dark
69 # fi
70 # '';
71}