A script to launch Minecraft Linux Launcher directly, bypassing the launcher UI

mclaunch.py

#!/usr/bin/python3

import os, sys, subprocess, signal

LAUNCHER_DATA = os.path.expanduser('~') + '/.local/share/mcpelauncher/'

USAGE = "Usage: mclaunch.py <version> [x32/x64 (default: x64)]"

if not (2 <= len(sys.argv) <= 3):
	print(USAGE)
	exit(1)

ver = sys.argv[1]
arch = sys.argv[2] if len(sys.argv) == 3 else 'x64'

if arch not in ['x32', 'x64']:
	print(USAGE)
	exit(1)

mc_path = LAUNCHER_DATA + 'versions/' + ver

if not os.path.isdir(mc_path):
	print("Version", ver, "is not installed.")
	exit(1)

proc = subprocess.Popen(['./Minecraft.AppImage', '--appimage-mount'], stdout=subprocess.PIPE)

try:
	path = proc.stdout.readline().decode('utf-8').rstrip()

	env = os.environ.copy()
	env['LD_LIBRARY_PATH'] = path + '/usr/lib:/usr/lib'

	mcbin = 'mcpelauncher-client' if arch == 'x64' else 'mcpelauncher-client32'

	subprocess.run([path + '/usr/bin/' + mcbin, '-dg', mc_path], env=env)
except KeyboardInterrupt:
	pass
finally:
	proc.send_signal(signal.SIGINT)