Allow duplicate (name, value) entry points for backends #28388
Merged
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PR summary
Fixes #28367.
This allows duplicate (name, value) entry points for self-registering backends such as
matplotlib-inline
. This should not occur but sometimes a singleentry_points.txt
file can appear as two identical entry points and hence before this fix aRuntimeError
was raised. With this fix the duplicated entry points are tolerated.PR checklist