tip/src/eric7/eric7_virtualenv.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Copyright (c) 2021 - 2025 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
eric Virtual Environment Manager.

This is the main Python script to manage Python Virtual Environments from
outside of the IDE.
"""

import argparse
import os
import sys

from PyQt6.QtGui import QGuiApplication


def createArgparseNamespace():
    """
    Function to create an argument parser.

    @return created argument parser object
    @rtype argparse.ArgumentParser
    """
    from eric7.__version__ import Version

    # 1. create the argument parser
    parser = argparse.ArgumentParser(
        description="Graphical tool of the eric tool suite to manage Python Virtual"
        " Environments.",
        epilog="Copyright (c) 2021 - 2025 Detlev Offenbach <detlev@die-offenbachs.de>.",
    )

    # 2. add the arguments
    parser.add_argument(
        "-V",
        "--version",
        action="version",
        version="%(prog)s {0}".format(Version),
        help="show version information and exit",
    )
    parser.add_argument(
        "--config",
        metavar="config_dir",
        help="use the given directory as the one containing the config files",
    )
    parser.add_argument(
        "--settings",
        metavar="settings_dir",
        help="use the given directory to store the settings files",
    )

    # 3. create the Namespace object by parsing the command line
    args = parser.parse_args()
    return args


args = createArgparseNamespace()
if args.config:
    from eric7 import EricUtilities

    EricUtilities.setConfigDir(args.config)
if args.settings:
    from PyQt6.QtCore import QSettings

    SettingsDir = os.path.expanduser(args.settings)
    if not os.path.isdir(SettingsDir):
        os.makedirs(SettingsDir)
    QSettings.setPath(
        QSettings.Format.IniFormat, QSettings.Scope.UserScope, SettingsDir
    )

from eric7.Toolbox import Startup


def createMainWidget(_args):
    """
    Function to create the main widget.

    @param _args namespace object containing the parsed command line parameters
        (unused)
    @type argparse.Namespace
    @return reference to the main widget
    @rtype QWidget
    """
    from eric7.VirtualEnv.VirtualenvManagerWidgets import VirtualenvManagerWindow

    return VirtualenvManagerWindow(None)


def main():
    """
    Main entry point into the application.
    """
    QGuiApplication.setDesktopFileName("eric7_virtualenv")

    res = Startup.appStartup(args, createMainWidget)
    sys.exit(res)


if __name__ == "__main__":
    main()