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s zUFactory._iter_found_candidates.<locals>.iter_index_candidate_infos.<locals>.is_pinned)rx r� r� r� r� ) rc �find_best_candidate�applicable_candidates�allr �bool�reversedrx r� � functools�partialr� r� )�result�icans� all_yankedr� �pinnedr� �func)r� r� r� rr r� r� rJ rK �iter_index_candidate_infos2 s* � �zBFactory._iter_found_candidates.<locals>.iter_index_candidate_infos) �reqr r� r� r� r� r� r r2 r r= r< ) rr r� r� r� r� r� �ireqr� r� rJ )r� r� r� r� rr r� r� rK �_iter_found_candidates� s& (�z Factory._iter_found_candidates)�base_requirementsr� r] c c sJ |D ]@}|� � \}}|du r qt|�}|dus6J d��| �||�V qdS )a8 Produce explicit candidates from the base given an extra-ed package. :param base_requirements: Requirements known to the resolver. 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N)rx � package_name�supported_tags)rd �get_cache_entryro )rr rx r� rJ rJ rK �get_wheel_cache_entryZ s �z Factory.get_wheel_cache_entryc C sZ | j �|j�}|d u rd S | js$|S |jr.|S t� rV|jrVd|j� d|j� �}t |��d S )NzNWill not install to the user site because it will lack sys.path precedence to z in ) rq r� r� rg � in_usersiter0 �in_site_packages�raw_name�locationr )rr r� r` �messagerJ rJ rK �get_dist_to_uninstallm s ���z Factory.get_dist_to_uninstallrC )�causesr] c C s� |s J d��| j j}t|�dkrVt|d jj�}d|d jj�d|� d|��}t|�S d|� d�}|D ]0}|j� � }t|jj�}|d |�d |� d �7 }qft|�S ) Nz,Requires-Python error reported with no causer1 r zPackage z requires a different Python: z not in z%Packages require a different Python. z not in:� z (required by �)) re r� �lenrQ rD r� rE r� r �format_for_error)rr r� r� r� r� �cause�packagerJ rJ rK � _report_requires_python_error� s" ��� z%Factory._report_requires_python_error)r� rE r] c C s |d u rt |�}n|� d|j� d�}| j�|j�}| j�� }t� }t� }|D ]4}|jr^|jjnd} | rt|� |j � qL|� |j � qLdd� t |�D �} dd� t |�D �} | r�t � dd�| �p�d � |r�t � d d �|�p�d � t � d |d�| �p�d � t |�d k�r t �d� td|� ��S )Nz (from r� Fc S s g | ] }t |��qS rJ �rQ �r_ �vrJ rJ rK � <listcomp>� r� z?Factory._report_single_requirement_conflict.<locals>.<listcomp>c S s g | ] }t |��qS rJ r r rJ rJ rK r � r� z)Ignored the following yanked versions: %s�, �nonezJIgnored the following versions that require a different python version: %sz; zNCould not find a version that satisfies the requirement %s (from versions: %s)zrequirements.txtz�HINT: You are attempting to install a package literally named "requirements.txt" (which cannot exist). 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