a
    !6a                     @   sz   d dl Z d dlmZ d dlmZmZmZ d dlmZ d dl	m
Z
mZ d dlmZ dd Zd	d
 Zedg dZdd ZdS )    N)
namedtuple)AnyListOptional)tomli)InvalidRequirementRequirement)InstallationErrorc                 C   s   t | totdd | D S )Nc                 s   s   | ]}t |tV  qd S )N)
isinstancestr).0item r   6lib/python3.9/site-packages/pip/_internal/pyproject.py	<genexpr>       z"_is_list_of_str.<locals>.<genexpr>)r
   listall)objr   r   r   _is_list_of_str   s    
r   c                 C   s   t j| dS )Nzpyproject.toml)ospathjoin)Zunpacked_source_directoryr   r   r   make_pyproject_path   s    r   BuildSystemDetails)requiresbackendcheckbackend_pathc              
   C   s  t j|}t j|}|r^t|dd}t|}W d   n1 sH0    Y  |d}nd}|r|s| dur~| s~tdd} n<|rd|v r| dur| std|d d} n| du r|} | dusJ | sdS |du rd	d
gdd}|dusJ d}	d|vrt|	j|dd|d }
t	|
s:t|	j|dd|
D ]@}zt
| W n, tyz   t|	j|d|dY n0 q>|d}|dg }g }|du rd}d	d
g}t|
|||S )aB  Load the pyproject.toml file.

    Parameters:
        use_pep517 - Has the user requested PEP 517 processing? None
                     means the user hasn't explicitly specified.
        pyproject_toml - Location of the project's pyproject.toml file
        setup_py - Location of the project's setup.py file
        req_name - The name of the requirement we're processing (for
                   error reporting)

    Returns:
        None if we should use the legacy code path, otherwise a tuple
        (
            requirements from pyproject.toml,
            name of PEP 517 backend,
            requirements we should check are installed after setting
                up the build environment
            directory paths to import the backend from (backend-path),
                relative to the project root.
        )
    zutf-8)encodingNzbuild-systemzIDisabling PEP 517 processing is invalid: project does not have a setup.pyTbuild-backendzbDisabling PEP 517 processing is invalid: project specifies a build backend of {} in pyproject.tomlzsetuptools>=40.8.0Zwheelz setuptools.build_meta:__legacy__)r   r    zO{package} has a pyproject.toml file that does not comply with PEP 518: {reason}r   z]it has a 'build-system' table but not 'build-system.requires' which is mandatory in the table)packagereasonz1'build-system.requires' is not a list of strings.z='build-system.requires' contains an invalid requirement: {!r}zbackend-path)r   r   isfileopenr   loadgetr	   formatr   r   r   r   )Z
use_pep517Zpyproject_tomlZsetup_pyZreq_nameZhas_pyprojectZ	has_setupfZpp_tomlZbuild_systemZerror_templater   Zrequirementr   r   r   r   r   r   load_pyproject_toml   s    (
	




r)   )r   collectionsr   typingr   r   r   Zpip._vendorr   Z"pip._vendor.packaging.requirementsr   r   Zpip._internal.exceptionsr	   r   r   r   r)   r   r   r   r   <module>   s   