gh-130940: Modify default behavior of PyConfig.use_system_logger to enable on iOS#131172
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…er` to enable on iOS (python#131172) Modify default behavior of use_system_log to enable on iOS.
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#127592 added the
PyConfig.use_system_loggerconfiguration flag; this was backported to 3.13 in #127754.This introduced an ABI breakage in 3.13.2; the flag will be removed from 3.13 by #131129.
However, the functional effect of the flag is required on iOS so that the logs generated by the simulator can be observed at all. As a general rule, there's very little reason you'd not want stdout and stderr routed to the system log on iOS - every BeeWare app, for example, includes std-nslog, which implements effectively the same behavior.
To allow for this, #131129 modifies the behavior on iOS to always use the system logger for stdout/stderr. This PR ensures that behaviour will be consistent by default between 3.13 and 3.14 - use of the system log is enabled by default on iOS, and disabled by default on macOS.
PyConfig.use_system_loggerhas changed ABI in a patch 3.13.1 -> 3.13.2 #130940📚 Documentation preview 📚: https://cpython-previews--131172.org.readthedocs.build/