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B
    Rez                 @   s   d dl mZ d dlZd dlZd dlZd dlZd dlZd dlZd dlm	Z	 e	r\d dl
mZmZ eeZedZdd Zdd	 Zd
d Zdd Zdd Zdd Zdd ZdS )    )absolute_importN)MYPY_CHECK_RUNNING)ListOptionalz8include-system-site-packages\s*=\s*(?P<value>true|false)c               C   s   t jtt dt jkS )znChecks if sys.base_prefix and sys.prefix match.

    This handles PEP 405 compliant virtual environments.
    base_prefix)sysprefixgetattr r
   r
   /builddir/build/BUILDROOT/alt-python37-pip-20.2.4-6.el8.x86_64/opt/alt/python37/lib/python3.7/site-packages/pip/_internal/utils/virtualenv.py_running_under_venv   s    r   c               C   s
   t tdS )zmChecks if sys.real_prefix is set.

    This handles virtual environments created with pypa's virtualenv.
    real_prefix)hasattrr   r
   r
   r
   r   !_running_under_regular_virtualenv   s    r   c               C   s   t  p
t S )zGReturn True if we're running inside a virtualenv, False otherwise.
    )r   r   r
   r
   r
   r   running_under_virtualenv(   s    r   c           	   C   sP   t jtjd} y&tj| dd}|  S Q R X W n t	k
rJ   dS X dS )zReads {sys.prefix}/pyvenv.cfg and returns its contents as list of lines

    Returns None, if it could not read/access the file.
    z
pyvenv.cfgzutf-8)encodingN)
ospathjoinr   r   ioopenread
splitlinesIOError)pyvenv_cfg_filefr
   r
   r   _get_pyvenv_cfg_lines/   s    r   c              C   sR   t  } | dkrtd dS x0| D ](}t|}|dk	r"|ddkr"dS q"W dS )aZ  Check `{sys.prefix}/pyvenv.cfg` for system site-packages inclusion

    PEP 405 specifies that when system site-packages are not supposed to be
    visible from a virtual environment, `pyvenv.cfg` must contain the following
    line:

        include-system-site-packages = false

    Additionally, log a warning if accessing the file fails.
    NzCould not access 'pyvenv.cfg' despite a virtual environment being active. Assuming global site-packages is not accessible in this environment.TvaluefalseF)r   loggerwarning#_INCLUDE_SYSTEM_SITE_PACKAGES_REGEXmatchgroup)	cfg_linesliner"   r
   r
   r   _no_global_under_venv?   s    

r&   c              C   s0   t jt jtj} t j| d}t j|S )zCheck if "no-global-site-packages.txt" exists beside site.py

    This mirrors logic in pypa/virtualenv for determining whether system
    site-packages are visible in the virtual environment.
    zno-global-site-packages.txt)r   r   dirnameabspathsite__file__r   exists)site_mod_dirno_global_site_packages_filer
   r
   r   #_no_global_under_regular_virtualenv]   s    r.   c               C   s   t  rt S t rt S dS )zMReturns a boolean, whether running in venv with no system site-packages.
    F)r   r&   r   r.   r
   r
   r
   r   virtualenv_no_globalk   s
    r/   )
__future__r   r   loggingr   rer)   r   pip._internal.utils.typingr   typingr   r   	getLogger__name__r   compiler!   r   r   r   r   r&   r.   r/   r
   r
   r
   r   <module>   s&   
	
