This treewide change targets Python packages that specifies pytest flags with pytestFlagsArray, and whose flags cannot be consructed by other pytestCheckHook-honoured arguments. Use the __structuredAttrs-agnostic argument pytestFlags instead of the deprecated pytestFlagsArray. For flags with option arguments, join each flag and their option argument into a single command-line argument following POSIX Utility Argument Syntax[1] for easier overriding (remove/replace). Examples: * [ "-W" "ignore:message:WarningClass" ] -> [ "-Wignore:message:WarningClass" ] * [ "--reruns" "3" ] -> [ "--reruns=3" ] [1]: https://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap12.html