anki-container-image/via-xephyr.py

#!/usr/bin/env python3

import os
import pathlib
import random
import subprocess


def _main():
    image_id = subprocess.run(
        [
            "podman",
            "build",
            pathlib.Path(__file__).parent,
            "--iidfile",
            "/dev/stdout",
        ],
        text=True,
        stdout=subprocess.PIPE,
        check=True,
    ).stdout.rsplit("\n", maxsplit=1)[1]
    assert image_id.startswith("sha256:"), image_id
    display_name = ":" + str(random.randint(1, 2**31 - 1))
    subprocess.Popen(["Xephyr", display_name, "-resizeable"])
    os.execvpe(
        "podman",
        [
            "podman",
            "container",
            "runlabel",
            "podman-run-x11",
            image_id,
        ],
        os.environ | {"DISPLAY": display_name},
    )


if __name__ == "__main__":
    _main()