flakes: Migrate the config and miku to flakes

modules/services/kanshi/default.nix

@@ -0,0 +1,72 @@
+{
+  config
+, lib
+, pkgs
+, ...
+}:
+
+let
+  kanshi = pkgs.kanshi;
+  writeShellScript = pkgs.writeShellScript;
+  wallpapersPath = "/home/${config.ptw.system.singleUser}/Data/Wallpaper";
+  wallpapersHorizontal = "${wallpapersPath}/horizontal";
+  wallpapersVertical = "${wallpapersPath}/vertical";
+  wallpaperScript = writeShellScript "wallpaper.sh" ''
+    set -x
+    [[ $# -lt 1 ]] && echo "No profile specified" && exit 1
+
+    random_file() {
+      find "$1" -maxdepth 1 -type f | shuf -n 1
+    }
+
+    setbg() {
+      # Sets the background of $1 to $2
+      swaymsg "output \"$1\" background $2 fill"
+    }
+
+    case $1 in
+      homeMultihead)
+        horiz=$(random_file ${wallpapersHorizontal})
+        vert=$(random_file ${wallpapersVertical})
+
+        setbg "DP-2" $horiz
+        setbg "HDMI-A-3" $vert
+        ;;
+      genericMultihead)
+        horiz1=$(random_file ${wallpapersHorizontal})
+        horiz2=$(random_file ${wallpapersHorizontal})
+
+        setbg "eDP-1" $horiz1
+        setbg "HDMI-A-1" $horiz2
+        ;;
+      laptop)
+        horiz=$(random_file ${wallpapersHorizontal})
+
+        setbg "eDP-1" $horiz
+        ;;
+    esac
+  '';
+  mkProfile = name: outputs: {
+    outputs = outputs;
+
+    exec = "${wallpaperScript} ${name}";
+  };
+  cfg = config.ptw.services.kanshi;
+in {
+  options.ptw.services.kanshi = {
+    enable = lib.mkEnableOption "Enable kanshi and configure using HomeManager";
+    profiles = lib.mkOption {
+      description = "The actual kanshi configuration";
+      type = lib.types.anything;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ kanshi ];
+
+    home-manager.users."${config.ptw.system.singleUser}".services.kanshi = {
+      enable = true;
+      inherit (cfg) profiles;
+    };
+  };
+}