48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
"""Session-environment resolution and process launching.
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A trimmed version of hosts/thin-client's/hosts/touch-panel's sway_control.py: this
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device has only one Sway workspace and one app (the pantry-kiosk Chromium window), so
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there is no workspace-switching or window-focus surface to wrap — just enough to run
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`/usr/local/bin/pantry-kiosk [fragment]` with the graphical session's environment.
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"""
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from __future__ import annotations
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import glob
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import logging
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import os
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import subprocess
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log = logging.getLogger(__name__)
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def runtime_dir() -> str:
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return os.environ.get("XDG_RUNTIME_DIR") or f"/run/user/{os.getuid()}"
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def session_env() -> dict[str, str]:
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env = dict(os.environ)
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env["XDG_RUNTIME_DIR"] = runtime_dir()
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env.setdefault("DBUS_SESSION_BUS_ADDRESS", f"unix:path={runtime_dir()}/bus")
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env.setdefault("WAYLAND_DISPLAY", "wayland-1")
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matches = sorted(glob.glob(os.path.join(runtime_dir(), "sway-ipc.*.sock")))
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if matches:
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env["SWAYSOCK"] = matches[-1]
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return env
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def launch_pantry_kiosk(fragment: str) -> None:
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command = ["/usr/local/bin/pantry-kiosk", fragment] if fragment else ["/usr/local/bin/pantry-kiosk"]
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log.info("launching %s", " ".join(command))
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try:
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subprocess.Popen(
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command,
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env=session_env(),
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stdin=subprocess.DEVNULL,
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stdout=subprocess.DEVNULL,
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stderr=subprocess.DEVNULL,
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start_new_session=True,
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)
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except OSError as exc:
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log.error("could not launch pantry-kiosk: %s", exc)
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