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PackageFinderFc C s~ zt | j|d}W n& tjk
r8 td| j| Y nBX |szdtt|}|shtd|| j| dS td|| j| dS )aa
Return whether the given Python version is compatible with a link's
"Requires-Python" value.
:param version_info: A 3-tuple of ints representing the Python
major-minor-micro version to check.
:param ignore_requires_python: Whether to ignore the "Requires-Python"
value if the given Python version isn't compatible.
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Responsible for evaluating links for a particular project.
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:param project_name: The user supplied package name.
:param canonical_name: The canonical package name.
:param formats: The formats allowed for this package. Should be a set
with 'binary' or 'source' or both in it.
:param target_python: The target Python interpreter to use when
evaluating link compatibility. This is used, for example, to
check wheel compatibility, as well as when checking the Python
version, e.g. the Python version embedded in a link filename
(or egg fragment) and against an HTML link's optional PEP 503
"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
PEP 503 "data-requires-python" values in HTML links. Defaults
to False.
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target_python allow_yankedr0 r% r% r2 __init__r s zLinkEvaluator.__init__c C s d}|j r(| js(|jpd}dd|fS |jr<|j}|j}n| \}}|sPdS |tkrddd| fS d| jkr|t krd| j
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Determine whether a link is a candidate for installation.
:return: A tuple (is_candidate, result), where `result` is (1) a
version string if `is_candidate` is True, and (2) if
`is_candidate` is False, an optional string to log the reason
the link fails to qualify.
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C s |s t dt| | t| S g }g }d}| D ]>}|j}|js@n"|j|drV|d7 }n || q.|| q.|rx|}nt| }t|t| krd} n dt|d dd |D } t d
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|t|| | |S ) a
Filter out candidates whose hashes aren't allowed, and return a new
list of candidates.
If at least one candidate has an allowed hash, then all candidates with
either an allowed hash or no hash specified are returned. Otherwise,
the given candidates are returned.
Including the candidates with no hash specified when there is a match
allows a warning to be logged if there is a more preferred candidate
with no hash specified. Returning all candidates in the case of no
matches lets pip report the hash of the candidate that would otherwise
have been installed (e.g. permitting the user to more easily update
their requirements file with the desired hash).
zJGiven no hashes to check %s links for project %r: discarding no candidatesr )hashesrD zdiscarding no candidatesz discarding {} non-matches:
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Encapsulates some of the preferences for filtering and sorting
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Fc C s || _ || _dS )zR
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prefer_binary)r; ro rn r% r% r2 r@ C s z CandidatePreferences.__init__N)FF)r[ r\ r] r^ r@ r% r% r% r2 rm < s rm c @ s( e Zd ZdZdd Zdd Zdd ZdS ) r& zA collection of candidates, returned by `PackageFinder.find_best_candidate`.
This class is only intended to be instantiated by CandidateEvaluator's
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c C sH t |t |kst|dkr&|r2tn ||ks2t|| _|| _|| _dS )a
:param candidates: A sequence of all available candidates found.
:param applicable_candidates: The applicable candidates.
:param best_candidate: The most preferred candidate found, or None
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t | jS )z(Iterate through all candidates.
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Responsible for filtering and sorting candidates for installation based
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NFc C s: |dkrt }|dkr t }| }| ||||||dS )a Create a CandidateEvaluator object.
:param target_python: The target Python interpreter to use when
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object will be constructed from the running Python.
:param specifier: An optional object implementing `filter`
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versions.
:param hashes: An optional collection of allowed hashes.
N)r: rX specifierro rn ra )r r Z SpecifierSetrN )clsr: r> ro rn r| ra rX r% r% r2 create s zCandidateEvaluator.createc C s( || _ || _|| _|| _|| _|| _dS )z
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Return the applicable candidates from a list of candidates.
Nc S s h | ] }t |qS r% )r. )rd vr% r% r2 s z?CandidateEvaluator.get_applicable_candidates..c s s | ]}t |jV qd S rb r. r1 rd cr% r% r2 rf s z?CandidateEvaluator.get_applicable_candidates..)Z prereleasesc s g | ]}t |j kr|qS r% r r Zversionsr% r2
s z@CandidateEvaluator.get_applicable_candidates..)rk ra r: )r r filterrl r r )r; rk Zallow_prereleasesr| rv r% r r2 get_applicable_candidates s
z,CandidateEvaluator.get_applicable_candidatesc
C s | j }t|}d}d}|j}|jrt|j}||sDtd|j | jrNd}| | }|j
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Function to pass as the `key` argument to a call to sorted() to sort
InstallationCandidates by preference.
Returns a tuple such that tuples sorting as greater using Python's
default comparison operator are more preferred.
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
If prefer_binary was set, then all wheels are sorted above sources.
Note: it was considered to embed this logic into the Link
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r% r zB%s is not a supported wheel for this platform. It can't be sorted.rD Nz ^(\d+)(.*)$)r rg r/ Zis_wheelr rL rO r r Zsupport_index_min build_tagr_ rY groupsintri r rE r1 )
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Return the best candidate per the instance's sort order, or None if
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z&CandidateEvaluator.sort_best_candidatec C s" | |}| |}t|||dS )zF
Compute and return a `BestCandidateResult` instance.
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z)CandidateEvaluator.compute_best_candidate)NFFNN)FFN) r[ r\ r] r^ classmethodr~ r@ r r r r r% r% r% r2 r{ } s )
$< r{ c @ s e Zd ZdZd&ddZed'ddZedd Zej d d Zed
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dd Zdd Zdd Zdd Zdd Zd d Zd d Zd(d d!Zd)d"d#Zd$d% ZdS )*r' zThis finds packages.
This is meant to match easy_install's technique for looking for
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Nc C sP |dkrt }|p tt t }|| _|| _|| _|| _|| _|| _t | _ dS )a
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
the selection of source packages / binary packages when consulting
the index and links.
:param candidate_prefs: Options to use when creating a
CandidateEvaluator object.
N)
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:param selection_prefs: The candidate selection preferences, as a
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:param target_python: The target Python interpreter to use when
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N)ro rn )r r r> r? r r0 )r rm ro rn r? r r0 )r} r Zselection_prefsr> r r% r% r2 r~ ~ s zPackageFinder.createc C s | j jS rb r search_scoperx r% r% r2 r s zPackageFinder.search_scopec C s || j _d S rb r )r; r r% r% r2 r s c C s | j jS rb )r
find_linksrx r% r% r2 r s zPackageFinder.find_linksc C s | j jS rb )r
index_urlsrx r% r% r2 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 rb r rn rx r% r% r2 rn s z#PackageFinder.allow_all_prereleasesc C s d| j _d S )NTr rx r% r% r2 set_allow_all_prereleases s z'PackageFinder.set_allow_all_prereleasesc C s. t |}| j|}t|||| j| j| jdS )N)r: r< r= r> r? r0 )r r Zget_allowed_formatsr4 r9 r5 r7 )r; r: r< r= r% r% r2 make_link_evaluator s z!PackageFinder.make_link_evaluatorc C sP g g }}t }|D ]2}||kr|| |jr<|| q|| q|| S )z
Returns elements of links in order, non-egg links first, egg links
second, while eliminating duplicates
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zPackageFinder._sort_linksc C s( || j kr$td|| | j | d S )NzSkipping link: %s: %s)r r* r+ r )r; r/ rV r% r% r2 _log_skipped_link s
z PackageFinder._log_skipped_linkc C s< | |\}}|s(|r$| j||d dS t|j|t|dS )z
If the link is a candidate for install, convert it to an
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r: r. )r; link_evaluatorr/ Z is_candidateresultr% r% r2 get_install_candidate s z#PackageFinder.get_install_candidatec C s6 g }| |D ]"}| ||}|dk r|| q|S )zU
Convert links that are candidates to InstallationCandidate objects.
N)r r rj )r; r r rk r/ re r% r% r2 evaluate_links s z PackageFinder.evaluate_linksc
C s | j |}| |}| j||jd}g }|j D ]>\}}td| t | j||d}|
| W 5 Q R X q4| j||j d} | r| j dd tdd
dd | D | | | S ) a Find all available InstallationCandidate for project_name
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All versions found are returned as an InstallationCandidate list.
See LinkEvaluator.evaluate_link() for details on which files
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)r z Analyzing links from page %sT)reversezLocal files found: %srB c S s g | ]}t |jjqS r% )r r/ Zurlrc r% r% r2 r 2 s z5PackageFinder.find_all_candidates..)r Z
collect_linksr r r Zpagesitemsr* r+ r extendfilessortr, )
r; r: Zcollected_linksr Zfind_links_versionsZ
page_versionsZpage_urlZ
page_linksZ new_versionsZ
file_versionsr% r% r2 find_all_candidates
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z!PackageFinder.find_all_candidatesc C s" | j }tj|| j|j|j||dS )z3Create a CandidateEvaluator object to use.
)r: r> ro rn r| ra )r r{ r~ r9 ro rn )r; r: r| ra r r% r% r2 make_candidate_evaluator; 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.
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z!PackageFinder.find_best_candidatec C s |j dd}| j|j|j|d}|j}d}|jdk r@t|jj}dd }|dkrz|dkrzt d|||
t d| d}|r|dks|j|krd }|s|dk r|rt d
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1
c C sL t | D ].\}}|dkrqt| d| |kr| S qtd| |dS )a Find the separator's index based on the package's canonical name.
:param fragment: A + filename "fragment" (stem) or
egg fragment.
:param canonical_name: The package's canonical name.
This function is needed since the canonicalized name does not necessarily
have the same length as the egg info's name part. An example::
>>> fragment = 'foo__bar-1.0'
>>> canonical_name = 'foo-bar'
>>> _find_name_version_sep(fragment, canonical_name)
8
-Nz{} does not match {}) enumerater
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r( Y dS X | |d }|s>dS |S )zParse the version string from a + filename
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