Added bubblewrap / apparmor fixes and diagnostic tools for troubleshooting it on related distros.

ptlinux/runtime.py

@@ -16,6 +16,7 @@ import sys
 from typing import Mapping, Sequence
 
 from .command import CommandOutcome, CommandRunner, OutputLineFilter
+from .container_host import container_host_error, inspect_container_host
 from .depot import DEFAULT_DEPOT_START_OPTION, DepotStartOption
 from .gamebox import build_gamebox_command
 from .paths import AppPaths
@@ -255,6 +256,7 @@ def prepare_game_runtime(
 	selection: RuntimeSelection,
 	runner: CommandRunner,
 ) -> list[CommandOutcome]:
+	_require_container_host(selection, runner)
 	if not runner.dry_run:
 		paths.create_base_directories()
 	results: list[CommandOutcome] = []
@@ -388,6 +390,7 @@ def run_game(
 	extra_environment: Mapping[str, str] | None = None,
 	output_line_filter: OutputLineFilter | None = None,
 ) -> CommandOutcome:
+	_require_container_host(selection, runner)
 	if not paths.runtime_view.is_dir() and not runner.dry_run:
 		raise RuntimeErrorPT("runtime view is missing; prepare the game first")
 	native_executable, windows_executable, game_arguments = _game_start_command(
@@ -520,6 +523,7 @@ def run_runtime_prefix_command(
 
 	if not arguments:
 		raise ValueError("runtime-prefix command arguments cannot be empty")
+	_require_container_host(selection, runner)
 	if selection.kind == "umu":
 		command = [selection.executable, *arguments]
 		environment = _umu_environment(paths, selection)
@@ -550,6 +554,17 @@ def run_runtime_prefix_command(
 	)
 
 
+def _require_container_host(
+	selection: RuntimeSelection,
+	runner: CommandRunner,
+) -> None:
+	if runner.dry_run or selection.kind not in {"umu", "proton7-container"}:
+		return
+	report = inspect_container_host()
+	if not report.ready:
+		raise RuntimeErrorPT(container_host_error(report))
+
+
 def _runtime_python_path(existing: str | None) -> str:
 	"""Make the installed package importable after changing into runtime_view."""
 	package_root = str(Path(__file__).resolve().parent.parent)