launch.py

import install
import subprocess
import os
import sys
import importlib.util

python = sys.executable
git = os.environ.get("GIT", "git")
index_url = os.environ.get("INDEX_URL", "")
skip_install = False


def run(command, desc=None, errdesc=None, custom_env=None):
    if desc is not None:
        print(desc)

    result = subprocess.run(
        command,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        shell=True,
        env=os.environ if custom_env is None else custom_env,
    )

    if result.returncode != 0:

        message = f"""{errdesc or 'Error running command'}.
Command: {command}
Error code: {result.returncode}
stdout: {result.stdout.decode(encoding="utf8", errors="ignore") if len(result.stdout)>0 else '<empty>'}
stderr: {result.stderr.decode(encoding="utf8", errors="ignore") if len(result.stderr)>0 else '<empty>'}
"""
        raise RuntimeError(message)

    return result.stdout.decode(encoding="utf8", errors="ignore")


def check_run(command):
    result = subprocess.run(
        command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True
    )
    return result.returncode == 0


def is_installed(package):
    try:
        spec = importlib.util.find_spec(package)
    except ModuleNotFoundError:
        return False

    return spec is not None


def run_pip(args, desc=None):
    if skip_install:
        return

    index_url_line = f" --index-url {index_url}" if index_url != "" else ""
    return run(
        f'"{python}" -m pip {args} --prefer-binary{index_url_line}',
        desc=f"Installing {desc}",
        errdesc=f"Couldn't install {desc}",
    )


def run_python(code, desc=None, errdesc=None):
    return run(f'"{python}" -c "{code}"', desc, errdesc)


def extract_arg(args, name):
    return [x for x in args if x != name], name in args


if __name__ == "__main__":
    install.prepare_environment()

    from scripts import main

    main.launch()