animatch: fix build with cmake 4 (#449327)

pkgs/by-name/an/animatch/package.nix

@@ -18,6 +18,12 @@ stdenv.mkDerivation rec {
     hash = "sha256-zBV45WMAXtCpPPbDpr04K/a9UtZ4KLP9nUauBlbhrFo=";
   };
 
+  postPatch = ''
+    substituteInPlace libsuperderpy/src/3rdparty/cimgui/CMakeLists.txt --replace-fail \
+      'cmake_minimum_required(VERSION 3.1)' \
+      'cmake_minimum_required(VERSION 4.0)'
+  '';
+
   nativeBuildInputs = [
     cmake
   ];
@@ -32,6 +38,8 @@ stdenv.mkDerivation rec {
     "-DLIBSUPERDERPY_STATIC=ON" # recommended by upstream for coexistence with other superderpy games
   ];
 
+  strictDeps = true;
+
   meta = {
     homepage = "https://gitlab.com/HolyPangolin/animatch/";
     description = "Cute match three game for the Librem 5 smartphone";