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Z xZS )CachezuAn abstract class - provides cache directories for data from links
:param cache_dir: The root of the cache.
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7== IHHHHrz$7G7GHHH H r% c t )z5Return a directory to store cached items in for link.NotImplementedErrorr1 r3 s r# rI zCache.get_path_for_linkV s !###r% package_namesupported_tagsc t )zaReturns a link to a cached item if it exists, otherwise returns the
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Z xZ S ) SimpleWheelCachez&A cache of wheels for future installs.r( r Nc J t | d S r* )r+ r, r0 s r# r, zSimpleWheelCache.__init__i s!
#####r% r3 c x | | }| j sJ t j j | j dg|R S )a 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.
wheels)rA r( r- r. join)r1 r3 r@ s r# rI z"SimpleWheelCache.get_path_for_linkl sB **400~ ~w|DNH=u====r% rR rS c 6 g }|s|S t | }| || D ]\ }} t | }n# t $ r Y "w xY wt |j |k r t
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when a certain link is not found in the simple wheel cache first.
r( r Nc t | t | | _ t | _ d S r* )r+ r, r^ _wheel_cacherq _ephem_cacher0 s r# r, zWheelCache.__init__ s?
### ,Y 7 7 + - -r% r3 c 6 | j | S r* )r rI rQ s r# rI z WheelCache.get_path_for_link 224888r% c 6 | j | S r* )r rI rQ s r# get_ephem_path_for_linkz"WheelCache.get_ephem_path_for_link r r% rR rS c F | ||| }||S |j S r* )get_cache_entryr3 )r1 r3 rR rS cache_entrys r# rU zWheelCache.get s/ **4 ~NN K r% c | j ||| }||urt |d S | j ||| }||urt |d S dS )zReturns a CacheEntry with a link to a cached item if it exists or
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