cataclysmDDA: add UndeadPeople tileset

pkgs/games/cataclysm-dda/pkgs/default.nix

@@ -9,6 +9,7 @@ let
     };
 
     tileset = {
+      UndeadPeople = callPackage ./tilesets/UndeadPeople {};
     };
   };
 

pkgs/games/cataclysm-dda/pkgs/tilesets/UndeadPeople/default.nix

@@ -0,0 +1,23 @@
+{ lib, buildTileSet, fetchFromGitHub }:
+
+buildTileSet {
+  modName = "UndeadPeople";
+  version = "2020-04-07";
+
+  src = fetchFromGitHub {
+    owner = "SomeDeadGuy";
+    repo = "UndeadPeopleTileset";
+    rev = "6686230b35b712612b3c7573349740b6f7968ff9";
+    sha256 = "02higdazd7v2gci5lr8r7fhc6yr2az6gbvksgz0lrgh1wg8xgqgs";
+  };
+
+  modRoot = "MSX++UnDeadPeopleEdition";
+
+  meta = with lib; {
+    description = "Cataclysm DDA tileset based on MSX++ tileset";
+    homepage = "https://github.com/SomeDeadGuy/UndeadPeopleTileset";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ mnacamura ];
+    platforms = platforms.all;
+  };
+}