Joachim Breitner
[Deliberately restricting my reply to one mailing list. Cross-posting is usually not required.]
Hi,
Am Sonntag, den 14.02.2016, 19:51 +0100 schrieb Sven Panne:
As stated on the Wiki, stuff in -Wcompat will often be non- actionable,
you omitted the important “if backwards compatibility is desired;”. The sometimes complicated hoops that you will have to jump through to gain 3-release-backward-compatibility are not something I expect every developer to follow, and for most others, “adjust early to API changes” will more likely be the sensible thing to do. Those might want to leave -Wcompat in their builds.
Couldn't have said it better myself. Ubiquitous usage of -Wall isn't a problem; it's when users begin to assume that the behavior of -Wall (which nominally includes *all* warnings supported by GHC) will remain stable across releases that the trouble begins. Cheers, - Ben