Considering issue #2168733: locale.settings.yml uses absolute path which contradicts CMI effort → , the LocalStreamWrapper needs to support recursive path resolution, e.g.:
transaltions://folder can depend from public://translation folder, but LocalStreamWrapper do not support recursive stream resolution.
Update the native PHP function realpath and dirname in function getLocalPath with Drupal wrappers.
Unit Testing, maybe using vfsStream library.
Postponed: needs info
9.5
The patch will have to be re-rolled with new suggestions/changes described in the comments in the issue.
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