archey4/archey/environment.py
2021-03-11 15:52:16 +01:00

31 lines
1.1 KiB
Python

"""
Simple class (acting as a singleton) dealing with environment variables.
Variables that should alter Archey _global_ behavior may be DRY-ed here.
"""
import os
import platform
from archey.singleton import Singleton
class Environment(metaclass=Singleton):
"""
At startup, instantiate this class and set up some attributes
according to their respective environment variable value.
"""
# See <https://no-color.org/>.
NO_COLOR = ('NO_COLOR' in os.environ)
# See <https://consoledonottrack.com/>.
DO_NOT_TRACK = (os.getenv('DO_NOT_TRACK') == '1')
def __init__(self):
if platform.system() == 'Darwin':
# Makes future `platform.mac_ver` calls not being _trolled_ by Darwin's kernel
# when opening `/System/Library/CoreServices/SystemVersion.plist` file.
# "Fortunately" for us, `platform` module does not cache these very results.
# See `platform._mac_ver_xml` function and
# <https://eclecticlight.co/2020/08/13/macos-version-numbering-isnt-so-simple/>.
os.environ['SYSTEM_VERSION_COMPAT'] = '0'