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FormatControlc C s= t j | d t d d d t �} t j | j d � � j � S( s' Return a stable sha224 of a dictionary.t sort_keyst
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_hash_dict s !t Cachec B sM e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� An abstract class - provides cache directories for data from links
:param cache_dir: The root of the cache.
:param format_control: An object of FormatControl class to limit
binaries being read from the cache.
:param allowed_formats: which formats of files the cache should store.
('binary' and 'source' are the only allowed values)
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Legacy cache key (pip < 20) for compatibility with older caches.
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t � � d S( s> Return a directory to store cached items in for link.
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t � � d S( sa Returns a link to a cached item if it exists, otherwise returns the
passed link.
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c C s# t t | � j | | d h � d S( NR# ( R$ RV R% ( R/ R+ R, ( ( sD /opt/alt/python36/lib/python3.6/site-packages/pip/_internal/cache.pyR% � s c C s7 | j | � } | j s t � t j j | j d | � S( Nt wheels( R= R+ R) R& R' R7 ( R/ R8 R< ( ( sD /opt/alt/python36/lib/python3.6/site-packages/pip/_internal/cache.pyRG � s c C s7 | j | � } | j s t � t j j | j d | � S( s� Return a directory to store cached wheels for link
Because there are M wheels for any one sdist, we provide a directory
to cache them in, and then consult that directory when looking up
cache hits.
We only insert things into the cache if they have plausible version
numbers, so that we don't contaminate the cache with things that were
not unique. E.g. ./package might have dozens of installs done for it
and build a version of 0.0...and if we built and cached a wheel, we'd
end up using the same wheel even if the source has been edited.
:param link: The link of the sdist for which this will cache wheels.
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t EphemWheelCachec B s e Z d Z d � Z RS( sG A SimpleWheelCache that creates it's own temporary cache directory
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WheelCachec B sD e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� Wraps EphemWheelCache and SimpleWheelCache into a single Cache
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when a certain link is not found in the simple wheel cache first.
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or ephemeral cache.
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