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DirectedGrapht RequirementInformationt requirementt parentt ResolverExceptionc B s e Z d Z RS( s� A base class for all exceptions raised by this module.
Exceptions derived by this class should all be handled in this module. Any
bubbling pass the resolver should be treated as a bug.
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__module__t __doc__( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR
s t RequirementsConflictedc B s e Z d � Z d � Z RS( c C s# t t | � j | � | | _ d S( N( t superR
t __init__t criterion( t selfR
( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR s c C s) d j d j d � | j j � D� � � S( Ns Requirements conflict: {}s , c s s | ] } t | � Vq d S( N( t repr( t .0t r( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pys <genexpr> s ( t formatt joinR
t iter_requirement( R ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyt __str__ s ( R R R R ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR
s t InconsistentCandidatec B s e Z d � Z d � Z RS( c C s/ t t | � j | | � | | _ | | _ d S( N( R R R t candidateR
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( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR ! s c C s/ d j | j d j d � | j j � D� � � S( Ns+ Provided candidate {!r} does not satisfy {}s , c s s | ] } t | � Vq d S( N( R ( R R ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pys <genexpr>) s ( R R R R
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RS( sQ Representation of possible resolution results of a package.
This holds three attributes:
* `information` is a collection of `RequirementInformation` pairs.
Each pair is a requirement contributing to this criterion, and the
candidate that provides the requirement.
* `incompatibilities` is a collection of all known not-to-work candidates
to exclude from consideration.
* `candidates` is a collection containing all possible candidates deducted
from the union of contributing requirements and known incompatibilities.
It should never be empty, except when the criterion is an attribute of a
raised `RequirementsConflicted` (in which case it is always empty).
.. note::
This class is intended to be externally immutable. **Do not** mutate
any of its attribute containers.
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candidatest informationt incompatibilities( R R R R ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR A s c C s) d j d � | j D� � } d j | � S( Ns , c s s' | ] \ } } d j | | � Vq d S( s ({!r}, via={!r})N( R ( R t reqR ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pys <genexpr>H s s
Criterion({})( R R R ( R t requirements( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyt __repr__F s c C ss | j | g � } t | t j � s3 t | � } n | d | d t | | � g d g � } | so t | � � n | S( s. Build an instance from a requirement.
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| � � n | S( s> Build a new instance from this and a new requirement.
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(!( R R R R R t classmethodR% R R' R, R0 ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR - s
t ResolutionErrorc B s e Z RS( ( R R ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR2 ~ s t ResolutionImpossiblec B s e Z d � Z RS( c C s# t t | � j | � | | _ d S( N( R R3 R t causes( R R4 ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR � s ( R R R ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR3 � s t ResolutionTooDeepc B s e Z d � Z RS( c C s# t t | � j | � | | _ d S( N( R R5 R t round_count( R R6 ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR � s ( R R R ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR5 � s t States mapping criteriat
Resolutionc B sn e Z d Z d � Z e d � � Z d � Z d � Z d � Z d � Z d � Z
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RS( s� Stateful resolution object.
This is designed as a one-off object that holds information to kick start
the resolution process, and holds the results afterwards.
c C s | | _ | | _ g | _ d S( N( t _pt _rt _states( R R$ t reporter( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/resolvelib/resolvers.pyR � s c C s3 y | j d SWn t k
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r? t d t j � d i � } n( Xt d | j j � d | j j � � } | j j | � d S( s� Push a new state into history.
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t Resolverc B s e Z d Z e Z d d � Z RS( s8 The thing that performs the actual resolution work.
id c C s4 t | j | j � } | j | d | �} t | � S( s Take a collection of constraints, spit out the resolution result.
The return value is a representation to the final resolution result. It
is a tuple subclass with three public members:
* `mapping`: A dict of resolved candidates. Each key is an identifier
of a requirement (as returned by the provider's `identify` method),
and the value is the resolved candidate.
* `graph`: A `DirectedGraph` instance representing the dependency tree.
The vertices are keys of `mapping`, and each edge represents *why*
a particular package is included. A special vertex `None` is
included to represent parents of user-supplied requirements.
* `criteria`: A dict of "criteria" that hold detailed information on
how edges in the graph are derived. Each key is an identifier of a
requirement, and the value is a `Criterion` instance.
The following exceptions may be raised if a resolution cannot be found:
* `ResolutionImpossible`: A resolution cannot be found for the given
combination of requirements. The `causes` attribute of the
exception is a list of (requirement, parent), giving the
requirements that could not be satisfied.
* `ResolutionTooDeep`: The dependency tree is too deeply nested and
the resolver gave up. This is usually caused by a circular
dependency, but you can try to resolve this by increasing the
`max_rounds` argument.
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