Reconsidering -Wall and -Wcompat

Joachim Breitner mail at
Sun Feb 14 22:45:14 UTC 2016

[Deliberately restricting my reply to one mailing list. Cross-posting
is usually not required.]


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.


Joachim “nomeata” Breitner
  mail at joachim-breitner.de
  XMPP: nomeata at • OpenPGP-Key: 0xF0FBF51F
  Debian Developer: nomeata at

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: This is a digitally signed message part
URL: <>

More information about the Glasgow-haskell-users mailing list