[Haskell-cafe] Safe lens?

[dag.odenhall at gmail.com]

On Mon, Oct 29, 2012 at 10:42 PM, Michael Sloan <mgsloan at gmail.com> wrote:

> It'd be pretty fancy if Safe Haskell could give reasons for "None" /
> tell what would have made it unsafe in the event of "Trustworthy".
> Particularly fancy if integrated into the haddocks.
>

ghc -fwarn-unsafe
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