flakes: Migrate the config and miku to flakes

lib/helpers/kanshi.nix

@@ -0,0 +1,45 @@
+{
+  mkWallpaperScript = { pkgs, config }: let
+    wallpapers = "/home/${config.ptw.system.singleUser}/Data/Wallpaper";
+    wallpapersHorizontal = "${wallpapers}/horizontal";
+    wallpapersVertical = "${wallpapers}/vertical";
+  in pkgs.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" $horiz
+        ;;
+    esac
+  '';
+  mkProfile = { script, name, outputs }: {
+    outputs = outputs;
+    exec = "${script} ${name}";
+  };
+}