On Jul 4, 2017, at 11:53 PM, Nick Coghlan <ncoghlan@gmail.com> wrote:

While it would definitely be useful to have a "check build
consistency" tool that built wheel files via all defined paths and
then used diffoscope to compare them, having such a tool available
wouldn't be a prerequisite for PEP acceptance (just as having
auditwheel available wasn't a requirement for accepting the manylinux1
specification).

I’ve had a niggling feeling about this hook from the beginning, but I couldn’t quite put my finger on it until Nathaniel’s email made me realize it. I feel like this hook is really *only* useful for flit, and for other projects it is largely either going to be completely redundant or be an attractive nuisance that ends up only causing issues. It’s a pretty narrow use case where this hook is both able to do something AND doesn’t have the exact same requirements as build_sdist.

When I felt this was a more generic hook, I was OK with it, but I don’t think it’s a good idea now that I’ve thought on it more and it feels entirely ungeneric.

—
Donald Stufft