As of August 4th, visiting https://requires.io/github/scikit-build/scikit-build/requirements/?branch=master reports that setuptools and sphinx are outdated. For future reference, see screenshot below.

• setuptools: Add # rq.filter: <45 (see documentation of requires filter here). Indeed, as explained in a0cbced, an older setuptools needs to be used for python < 3.

• sphinx: @henryiii , in 9087b5d you added a constraint for not using the latest sphinx. Do you recall the rational for doing so ?

Screenshots from August 4th

scikit-build readme file

requires.io website