Re: deprecating

On 23/10/2012 09:04, Roman Leshchinskiy wrote:

Bryan O'Sullivan wrote:

...

On Mon, Oct 22, 2012 at 4:14 PM, Simon Peyton-Jones wrote:

...

Do you mean “silently and forever”?

I think that's what I mean, yes.

As Johan notes, many of us run our continuous builds of our packages with -Wall -Werror in order to keep them as clean as possible. Introducing a deprecation thus forces me into some kind of response as my builds all suddenly fail: I can either turn off -Werror for a package, or edit the affected source files.

It seems to me that hard-coding -Werror in source distributions is a mistake since it serves no real purpose other than breaking the package for everyone whenever a compiler introduces a new warning. You can compile with -Werror while developing, of course. But why have -Werror in the release?

Quite right, shipping code with -Werror turned on is definitely a bad idea. I think Hackage and/or Cabal will complain if you try to do this. Cheers, Simon