Use generated code to interface with XCB instead of hand-written code

Author: jholveck

pyproject.toml

@@ -72,6 +72,7 @@ mss = "mss.__main__:main"
 [project.optional-dependencies]
 dev = [
   "build==1.3.0",
+  "lxml==6.0.2",
   "mypy==1.18.2",
   "ruff==0.14.3",
   "twine==6.2.0",
@@ -188,3 +189,6 @@ ignore = [
   "S607",     # `subprocess` call without explicit paths
   "SLF001",   # private member accessed
 ]
+
+[tool.ruff.per-file-target-version]
+"src/xcbproto/*" = "py312"

src/mss/linux/__init__.py

@@ -4,7 +4,8 @@
 from mss.exception import ScreenShotError
 
 
-def MSS(backend: str = "xlib", **kwargs: Any) -> MSSBase:
+# This factory function is named in upper-case for backwards compatibility.
+def MSS(backend: str = "default", **kwargs: Any) -> MSSBase:  # noqa: N802
     backend = backend.lower()
     if backend in {"default", "xlib"}:
         from . import xlib  # noqa: PLC0415