Re: split TOAST support out of postgres.h

On Tue, Jan 10, 2023 at 06:07:49AM +0100, Peter Eisentraut wrote:
> On 30.12.22 17:50, Tom Lane wrote:
> >Peter Eisentraut <peter.eisentraut@enterprisedb.com> writes:
> >>On 28.12.22 16:07, Tom Lane wrote:
> >>>I dunno, #3 seems kind of unprincipled.  Also, since fmgr.h is included
> >>>so widely, I doubt it is buying very much in terms of reducing header
> >>>footprint.  How bad is it to do #2?
> >
> >>See this incremental patch set.
> >
> >Wow, 41 files requiring varatt.h is a lot fewer than I would have guessed.
> >I think that bears out my feeling that fmgr.h wasn't a great location:
> >I count 117 #includes of that, many of which are in .h files themselves
> >so that many more .c files would be required to read them.
> 
> committed

SET_VARSIZE alone appears in 74 pgxn distributions, so I predict extension
breakage en masse.  I would revert this.