I have a namespaced package called "orgname-thing".
Setup.cfg has name as orgname-thing

Everything works as expected except:
on build, I get a file name "orgname-thing-version.tar.gz" -- expected that.
"orgname_thing-version-py3-none-any.whl" --- did not expect that.

I'm fairly certain this is the INTENDED behavior - my "issue" is I can't figure out why. I've consulted builds docs, googled for PEP's and have no clue.

(In addition, pip with a extra_index_url looks for "orgname-thing/orgname_thing*whl" which was REALLY surprising.)

In short, I'm asking for docs on why this is intended.