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    Re                 @   s`   d dl mZ d dlZd dlZd dlmZ er<d dlmZmZ dd Z	dd Z
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 Zdd ZdS )    )absolute_importN)MYPY_CHECK_RUNNING)OptionalTuplec               C   s   t  p
t S )z9Returns glibc version string, or None if not using glibc.)glibc_version_string_confstrglibc_version_string_ctypes 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/glibc.pyglibc_version_string   s    r
   c           
   C   sD   t jdkrdS ytd \} }W n tttfk
r>   dS X |S )z@Primary implementation of glibc_version_string using os.confstr.win32NCS_GNU_LIBC_VERSION)sysplatformosconfstrsplitAttributeErrorOSError
ValueError)_versionr   r   r	   r      s    
r   c              C   sr   yddl } W n tk
r    dS X | d}y
|j}W n tk
rJ   dS X | j|_| }t|tsn|	d}|S )z=Fallback implementation of glibc_version_string using ctypes.r   Nascii)
ctypesImportErrorCDLLgnu_get_libc_versionr   c_char_prestype
isinstancestrdecode)r   process_namespacer   version_strr   r   r	   r   '   s    



r   c              C   s   t  } | dkrdS d| fS dS )zTry to determine the glibc version

    Returns a tuple of strings (lib, version) which default to empty strings
    in case the lookup fails.
    N) r#   glibc)r
   )glibc_versionr   r   r	   libc_verW   s    r&   )
__future__r   r   r   pip._internal.utils.typingr   typingr   r   r
   r   r   r&   r   r   r   r	   <module>   s   0