The default impl was added in the course of

https://phabricator.haskell.org/D4857

https://ghc.haskell.org/trac/ghc/ticket/12970

with the intention of facilitating its eventual removal by providing a smoother migration path over a 3-year compat-window.

What I can't explain is why the `MINIMAL` pragma wasn't adapted to take into account that `bitSize` now has a default impl;

But then again, https://phabricator.haskell.org/D4857 also states there was no code review logged:

This revision was not accepted when it landed; it landed in state Needs Review.

... :-)

On Fri, Nov 1, 2019 at 12:08 PM chessai . <chessai1996@gmail.com> wrote:

All,

In Data.Bits.Bits, `bitSize` has been marked deprecated for a while.
but in 4.12, it was also given a default implementation. The issue is
that it is in the minimal pragma as a required method. So, if I define
it, I get a deprecation warning, but if I don't define it, I get a
warning about missing implementations.

Is this the intended behaviour?

Thanks
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