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Return whether the given Python version is compatible with a link's
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Responsible for evaluating links for a particular project.
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:param project_name: The user supplied package name.
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:param formats: The formats allowed for this package. Should be a set
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version, e.g. the Python version embedded in a link filename
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"data-requires-python" attribute.
:param allow_yanked: Whether files marked as yanked (in the sense
of PEP 592) are permitted to be candidates for install.
:param ignore_requires_python: Whether to ignore incompatible
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to False.
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Determine whether a link is a candidate for installation.
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Filter out candidates whose hashes aren't allowed, and return a new
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allows a warning to be logged if there is a more preferred candidate
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Responsible for filtering and sorting candidates for installation based
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:param target_python: The target Python interpreter to use when
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object will be constructed from the running Python.
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N)rE rl r r r rv )r r SpecifierSetr_ )clsrE rH r r r rv rl r% r% r5 create s zCandidateEvaluator.create)rE rl r r r rv r) c C s< || _ || _|| _|| _|| _|| _dd t|D | _dS )z
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Function to pass as the `key` argument to a call to sorted() to sort
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The preference is as follows:
First and foremost, candidates with allowed (matching) hashes are
always preferred over candidates without matching hashes. This is
because e.g. if the only candidate with an allowed hash is yanked,
we still want to use that candidate.
Second, excepting hash considerations, candidates that have been
yanked (in the sense of PEP 592) are always less preferred than
candidates that haven't been yanked. Then:
If not finding wheels, they are sorted by version only.
If finding wheels, then the sort order is by version, then:
1. existing installs
2. wheels ordered via Wheel.support_index_min(self._supported_tags)
3. source archives
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Return the best candidate per the instance's sort order, or None if
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Compute and return a `BestCandidateResult` instance.
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z)CandidateEvaluator.compute_best_candidate)NFFNN)FFN)r8 r9 r: rq classmethodr1 r r rt r
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This constructor is primarily meant to be used by the create() class
method and from tests.
:param format_control: A FormatControl object, used to control
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the index and links.
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N)r r )r r rH rI r r( )r r r r rI r r( )r r r rH r r% r% r5 r { s zPackageFinder.creater c C s | j S rw )rN r r% r% r5 rH s zPackageFinder.target_pythonc C s | j jS rw r search_scoper r% r% r5 r s zPackageFinder.search_scope)r r) c C s || j _d S rw r )rO r r% r% r5 r s c C s | j jS rw )r
find_linksr r% r% r5 r s zPackageFinder.find_linksc C s | j jS rw )r
index_urlsr r% r% r5 r s zPackageFinder.index_urlsc c s | j jjD ]}t| V q
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trusted_hosts s zPackageFinder.trusted_hostsc C s | j jS rw r r r r% r% r5 r s z#PackageFinder.allow_all_prereleasesc C s d| j _d S NTr r r% r% r5 set_allow_all_prereleases s z'PackageFinder.set_allow_all_prereleasesc C s | j jS rw r r r r% r% r5 r s zPackageFinder.prefer_binaryc C s d| j _d S r r r r% r% r5 set_prefer_binary s z PackageFinder.set_prefer_binaryc C s dd | j D }t|S )Nc S s h | ]\}}}|t jkr|qS r% )r7 rC )rx _resultdetailr% r% r5 r s
z@PackageFinder.requires_python_skipped_reasons..)r r )rO reasonsr% r% r5 requires_python_skipped_reasons s z-PackageFinder.requires_python_skipped_reasons)rE r) c C s. t |}| j|}t|||| j| j| jdS )N)rE rF rG rH rI r( )r r get_allowed_formatsrD rN rJ rL )rO rE rF rG r% r% r5 make_link_evaluator s z!PackageFinder.make_link_evaluator)linksr) c C sP g g }}t }|D ]2}||kr|| |jr<|| q|| q|| S )z
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zPackageFinder._sort_links)r& r r r) c C s2 |||f}|| j kr.td|| | j | d S )NzSkipping link: %s: %s)r r- r. r )rO r& r r entryr% r% r5 _log_skipped_link s
z PackageFinder._log_skipped_link)link_evaluatorr& r) c C s: | |\}}|tjkr*| ||| dS t|j||dS )z
If the link is a candidate for install, convert it to an
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N)r^ r& r4 )rp r7 r= r r rE )rO r r& r r r% r% r5 get_install_candidate s
z#PackageFinder.get_install_candidate)r r r) c C s6 g }| |D ]"}| ||}|dk r|| q|S )zU
Convert links that are candidates to InstallationCandidate objects.
N)r r r~ )rO r r ru r& r= r% r% r5 evaluate_links s z PackageFinder.evaluate_links) project_urlr r) c C sT t d| | j|}|d kr$g S tt|}t | j||d}W 5 Q R X |S )Nz-Fetching project page and analyzing links: %s)r )r- r. r fetch_responser{ r r r )rO r r index_response
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package_linksr% r% r5 process_project_url s z!PackageFinder.process_project_url)maxsizec
C s | |}| jj|tj| j|dd}tjdd |D }t |}tjdd |D }|
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a Find all available InstallationCandidate for project_name
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file_links_itfile_candidatespathsr= r% r% r5 find_all_candidates$ s:
z!PackageFinder.find_all_candidates)rE r rv r) c C s" | j }tj|| j|j|j||dS )z*Create a CandidateEvaluator object to use.)rE rH r r r rv )r r r rN r r )rO rE r rv r r% r% r5 make_candidate_evaluatorY s z&PackageFinder.make_candidate_evaluatorc C s$ | |}| j|||d}||S )a Find matches for the given project and specifier.
:param specifier: An optional object implementing `filter`
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versions.
:return: A `BestCandidateResult` instance.
)rE r rv )r r r )rO rE r rv ru candidate_evaluatorr% r% r5 find_best_candidatej s
z!PackageFinder.find_best_candidate)requpgrader) c C s |j dd}| j|j|j|d}|j}d}|jdk r<|jj}tt t ddd}|dkr|dkrt
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d|j|| |S )zTry to find a Link matching req
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z PackageFinder.find_requirement)NNN)N)NN)NN)4r8 r9 r: rq r r rt r r r rP r r r propertyrH r r setterr r1 r r r r r r r r r rD r r r r7 r r r r r r lru_cacher r r r r r r# r r r r% r% r% r5 r$ M s '
7
)fragmentrF r) c C sN t | D ].\}}|dkrqt| d| |kr| S qt| d| dS )a Find the separator's index based on the package's canonical name.
:param fragment: A + filename "fragment" (stem) or
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have the same length as the egg info's name part. An example::
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8
-Nz does not match )r r r )r# rF ir r% r% r5 _find_name_version_sep s
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r pip._internal.exceptionsr r r r pip._internal.index.collectorr r pip._internal.models.candidater #pip._internal.models.format_controlr pip._internal.models.linkr !pip._internal.models.search_scoper $pip._internal.models.selection_prefsr "pip._internal.models.target_pythonr pip._internal.models.wheelr pip._internal.reqr Zpip._internal.utils._logr pip._internal.utils.filetypesr pip._internal.utils.hashesr pip._internal.utils.loggingr pip._internal.utils.miscr pip._internal.utils.packagingr! pip._internal.utils.unpackingr" __all__r8 r- r r1 BuildTagr rt r6 Enumr7 rD r r r# r r$ r& rb r% r% r% r5 sr $
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