download-macos-libs.py: Skip mesa, llvm

scripts/download-macos-libs.py

@@ -92,7 +92,7 @@ def verify_pkg(self, pkg_path, sig_path):
 	                            shell=True, check=True)
 
 	def is_pkg_skipped(self, pkg_name):
-		return any(pkg_name.startswith(n) for n in ('python', 'ncurses'))
+		return any(pkg_name.startswith(n) for n in ('python', 'ncurses', 'mesa', 'llvm'))
 
 	def install_pkg(self, pkg_name):
 		if self.is_pkg_installed(pkg_name):