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Use --force-reinstall to force an installation of the wheel.z�The candidate selected for download or install is a yanked version: {name!r} candidate (version {version} at {link}) Reason for being yanked: {reason}z <none given>)r> �version�link�reason)6r0 Zcollect_root_requirementsr r; r% r) r< �os�environr r � RLResolver�resolve� requirementsr1 r Zget_installation_errorr r r r �sorted�mapping�valuesZget_install_requirementr> r? � contextlib�suppress�KeyErrorr Zadd_named_requirementr �extrasZget_dist_to_uninstallZshould_reinstallr( rC Z is_editableZeditableZ source_link�is_fileZis_wheel�logger�infoZ is_yanked�formatZ yanked_reason�warningZall_requirementsr Z prepare_linked_requirements_moreZpreparedZneeds_more_preparation)r2 r7 r9 Z collectedZproviderZreporterZresolverZ#limit_how_complex_resolution_can_be�result�e�error�req_set� candidate�ireq�reqZinstalled_distrD �msgZreqsr5 r5 r6 rI L s� � ���� � � �� � � � zResolver.resolverZ c C sd | j dus J d��|jsg S | j j}t|t|j�� ��}t|j�� tj t |d�dd�}dd� |D �S )aZ Get order for installation of requirements in RequirementSet. The returned list contains a requirement before another that depends on it. This helps ensure that the environment is kept consistent as they get installed one-by-one. The current implementation creates a topological ordering of the dependency graph, giving more weight to packages with less or no dependencies, while breaking any cycles in the graph at arbitrary points. We make no guarantees about where the cycle would be broken, other than it *would* be broken. Nzmust call resolve() first)�weightsT)rB �reversec S s g | ]\}}|�qS r5 r5 )�.0�_r\ r5 r5 r6 � <listcomp>� s z3Resolver.get_installation_order.<locals>.<listcomp>) r1 rJ �graph�get_topological_weights�set�keysrK �items� functools�partial�_req_set_item_sorter)r2 rZ rd r_ Z sorted_itemsr5 r5 r6 �get_installation_order� s �z Resolver.get_installation_orderr= )r r r r r r! r" r r# r$ r% r$ r& r$ r' r$ r( r$ r) r* r+ r, )r7 r8 r9 r$ r: r )rZ r r: r8 )�__name__� __module__� __qualname__r/ r. rI rl � __classcell__r5 r5 r3 r6 r ) s � rr rd �DirectedGraph[str | None]�requirement_keys�set[str]r: �dict[str | None, int]c s� t � �i �d � ����fdd� � t � }� D ]}|du r q� �|�D ]} n|�|� q|s/n t� �d }|D ] }|�vr>q7|g�|< q7|D ]}� �|� qFq�d� t ��� ����}|rbJ |��d d � ��� D �S ) a� Assign weights to each node based on how "deep" they are. This implementation may change at any point in the future without prior notice. We first simplify the dependency graph by pruning any leaves and giving them the highest weight: a package without any dependencies should be installed first. This is done again and again in the same way, giving ever less weight to the newly found leaves. The loop stops when no leaves are left: all remaining packages have at least one dependency left in the graph. Then we continue with the remaining graph, by taking the length for the longest path to any node from root, ignoring any paths that contain a single node twice (i.e. cycles). This is done through a depth-first search through the graph, while keeping track of the path to the node. Cycles in the graph result would result in node being revisited while also being on its own path. In this case, take no action. This helps ensure we don't get stuck in a cycle. When assigning weight, the longer path (i.e. larger length) is preferred. We are only interested in the weights of packages that are in the requirement_keys. �node� str | Noner: �Nonec sz | �v rd S �� | g �}t|�dkrd S ��| � � �| �D ]}�|� q ��| � | �vr0d S |�t��� |�| < d S )N� )�get�len�add� iter_children�remove�append)ru Z cur_weights�child�rd �pathrr �visitr_ r5 r6 r� � s z&get_topological_weights.<locals>.visitTNr c S s i | ] \}}|t |��qS r5 )�max)ra ru Zwgtsr5 r5 r6 � <dictcomp>B s z+get_topological_weights.<locals>.<dictcomp>)ru rv r: rw )rf r| r{ rz r} rg � differencerh )rd rr ZleavesrB Z_childZweightZleafr� r5 r� r6 re � s4 ! � � re �item� tuple[str, InstallRequirement]r_ �tuple[int, str]c C s t | d �}|| |fS )a) Key function used to sort install requirements for installation. Based on the "weight" mapping calculated in ``get_installation_order()``. The canonical package name is returned as the second member as a tie- breaker to ensure the result is predictable, which is useful in tests. r r )r� r_ r> r5 r5 r6 rk E s rk )rd rq rr rs r: rt )r� r� r_ rt r: r� )9� __future__r rN ri �loggingrF �typingr r Zpip._vendor.packaging.utilsr Zpip._vendor.resolvelibr r r r rH Z pip._vendor.resolvelib.structsr Zpip._internal.cacher Zpip._internal.exceptionsr Z"pip._internal.index.package_finderr Z pip._internal.operations.preparer Z pip._internal.req.constructorsr Z pip._internal.req.req_installr Zpip._internal.req.req_setr Z pip._internal.resolution.baser r Z,pip._internal.resolution.resolvelib.providerr Z,pip._internal.resolution.resolvelib.reporterr r Z pip._internal.utils.packagingr �baser r r0 r Z pip._vendor.resolvelib.resolversr ZRLResultr* � getLoggerrm rS re rk r5 r5 r5 r6 �<module> s> 6g
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