Fix SDL setup in CI

Switch to custom composite action which fixes the issue

Update build_sdl.py to handle SDL installed to the system path

Author: HexDecimal

.github/workflows/python-package.yml

@@ -45,7 +45,7 @@ jobs:
   sdist:
     runs-on: ubuntu-latest
     steps:
-      - uses: libsdl-org/setup-sdl@6574e20ac65ce362cd12f9c26b3a5e4d3cd31dee
+      - uses: HexDecimal/my-setup-sdl[email protected]
         with:
           install-linux-dependencies: true
           build-type: "Debug"
@@ -125,7 +125,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install xvfb
-      - uses: libsdl-org/setup-sdl@6574e20ac65ce362cd12f9c26b3a5e4d3cd31dee
+      - uses: HexDecimal/my-setup-sdl[email protected]
         if: runner.os == 'Linux'
         with:
           install-linux-dependencies: true
@@ -168,7 +168,7 @@ jobs:
     needs: [ruff, mypy, sdist]
     runs-on: ubuntu-latest
     steps:
-      - uses: libsdl-org/setup-sdl@6574e20ac65ce362cd12f9c26b3a5e4d3cd31dee
+      - uses: HexDecimal/my-setup-sdl[email protected]
         if: runner.os == 'Linux'
         with:
           install-linux-dependencies: true
@@ -210,7 +210,7 @@ jobs:
       - name: Install Python dependencies
         run: |
           python -m pip install --upgrade pip tox
-      - uses: libsdl-org/setup-sdl@6574e20ac65ce362cd12f9c26b3a5e4d3cd31dee
+      - uses: HexDecimal/my-setup-sdl[email protected]
         if: runner.os == 'Linux'
         with:
           install-linux-dependencies: true
@@ -330,7 +330,7 @@ jobs:
           fetch-depth: ${{ env.git-depth }}
       - name: Checkout submodules
         run: git submodule update --init --recursive --depth 1
-      - uses: libsdl-org/setup-sdl@6574e20ac65ce362cd12f9c26b3a5e4d3cd31dee
+      - uses: HexDecimal/my-setup-sdl[email protected]
         with:
           install-linux-dependencies: true
           build-type: "Debug"

build_sdl.py

@@ -212,6 +212,12 @@ def get_output(self) -> str:
                 buffer.write(f"#define {name} ...\n")
             return buffer.getvalue()
 
+    def on_file_open(self, is_system_include: bool, includepath: str) -> Any:  # noqa: ANN401, FBT001
+        """Ignore includes other than SDL headers."""
+        if not Path(includepath).parent.name == "SDL3":
+            raise FileNotFoundError
+        return super().on_file_open(is_system_include, includepath)
+
     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 "SDL3/SDL" not in includepath, (includepath, curdir)
@@ -283,7 +289,8 @@ def get_emscripten_include_dir() -> Path:
         r"-I(\S+)",
         subprocess.check_output(["pkg-config", "sdl3", "--cflags"], universal_newlines=True),
     )
-    assert matches
+    if not matches:
+        matches = ["/usr/include"]
 
     for match in matches:
         if Path(match, "SDL3/SDL.h").is_file():