program/theme: Automatically switch theme based on time

Changes

2 changed files (+51/-2)

• features/wayland-de/default.nix
  • @@ -27,6 +27,7 @@ ./niri.nix
    ./swaylock.nix ./tofi.nix ./fcitx5.nix + ./my-theme.nix ./dunst.nix ./swaybg.nix ./waybar.nix
  • @@ -36,8 +37,6 @@ config = lib.mkIf config.features.wayland-de.enable {
    home.packages = [ # https://monaspace.githubnext.com/ pkgs.monaspace - - pkgs.my-theme ]; home.sessionVariables = {
• features/wayland-de/my-theme.nix (new)
  • @@ -0,0 +1,50 @@
    + # Copyright 2025 Shota FUJI <pockawoooh@gmail.com> + # + # Permission to use, copy, modify, and/or distribute this software for any + # purpose with or without fee is hereby granted. + # + # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + # REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + # AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + # INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + # LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + # OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + # PERFORMANCE OF THIS SOFTWARE. + # + # SPDX-License-Identifier: 0BSD + + { config, lib, pkgs, ... }: + { + config = lib.mkIf config.features.wayland-de.enable { + home.packages = [ + # /programs/theme + pkgs.my-theme + ]; + + systemd.user.services.my-theme = { + Unit = { + Description = "Apply appearance theme based on time"; + }; + + Service = { + Type = "oneshot"; + ExecStart = "${pkgs.my-theme}/bin/,theme auto"; + }; + }; + + systemd.user.timers.my-theme = { + Unit = { + Description = "Apply appearance theme periodically and at start up"; + }; + + Install = { + WantedBy = [ "timers.target" ]; + }; + + Timer = { + OnCalendar = "hourly"; + Persistent = true; + }; + }; + }; + }