fixup! fixup! fixup! fixup! fixup! fixup! fixup! squash! fixup! Fix CI regressions

Author: HexDecimal

.github/workflows/python-package.yml

@@ -268,7 +268,7 @@ jobs:
             git clone https://github.com/libsdl-org/SDL.git sdl_repo &&
             cmake -S sdl_repo -B sdl_build &&
             cmake --build sdl_build --config Release &&
-            cmake --install sdl_build --config Release
+            cmake --install sdl_build --config Release --prefix /
           CIBW_BEFORE_TEST: pip install numpy
           CIBW_TEST_COMMAND: python -c "import tcod.context"
           # Skip test on emulated architectures

build_sdl.py

@@ -207,6 +207,7 @@ def get_output(self) -> str:
 
     def on_include_not_found(self, is_malformed: bool, is_system_include: bool, curdir: str, includepath: str) -> None:  # noqa: ARG002, FBT001
         """Remove bad includes such as stddef.h and stdarg.h."""
+        assert "SDL_" not in includepath, includepath
         raise pcpp.OutputDirective(pcpp.Action.IgnoreAndRemove)
 
     def _should_track_define(self, tokens: list[Any]) -> bool: