Only load distribution of a name once #25296
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ashb
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Jul 26, 2022
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I’ve added a test for the function. |
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potiuk
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Tests failing :( |
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| self.dist = dist.metadata['name'] | ||
| self.dist = dist.metadata['Name'] |
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Python pacakge metadata keys are case-insensitive, I use Name (the case used by the standard) everywhere so tests are easier to write.
This mimics the import system's behavior -- package of a name in front of sys.path "shadows" the one in the back, and should avoid a package from being loaded multiple times, if its containing directory appears multiple times in sys.path. This also causes a side effect: if there are *different* plugins of the same name, previously the one later in sys.path would have been discovered, but now it wouldn't. This is a reasonable compromise to me, since loading multiple packages of one same name is never a good idea in Python, and we should have been careful to preclude the possibility to begin with.
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Looks green now. @ashb ? |
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This mimics the import system's behavior -- package of a name in front of
sys.path"shadows" the one in the back, and should avoid a package from being loaded multiple times, if its containing directory appears multiple times insys.path.This also causes a side effect: if there are different plugins of the same name, previously the one later in
sys.pathwould have been discovered, but now it wouldn't. I think this is a reasonable compromise, since loading multiple packages of one same name is never a good idea inPython in the first place, and we should have been careful to preclude the possibility to begin with.
Should fix #25271. cc @rino0601 @bmoon4