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    ʗRe&                     @   sp   d dl Z d dlZd dlmZmZ ee dddZee dddZee ddd	Zeeef dd
dZ	dS )    N)OptionalTuple)returnc                   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-python38-pip-22.2.1-2.el8.x86_64/opt/alt/python38/lib/python3.8/site-packages/pip/_internal/utils/glibc.pyglibc_version_string	   s    r	   c               
   C   sF   t jdkrdS ztd \} }W n tttfk
r@   Y 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   sv   zddl } W n tk
r"   Y dS X | d}z
|j}W n tk
rN   Y dS X | j|_| }t|tsr|	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_verN   s    r%   )
r   r   typingr   r   r   r	   r   r   r%   r   r   r   r   <module>   s   /