makeWrapper would be a nativeBuildInput.

But I think the paragraph before that

The standard environment provides a number of useful functions

is already confusing - it'd suggest it should already be available.

@worldofpeace, WDTY?

It's confusing because people might think wrapProgram is a separate thing when it all comes from makeWrapper. I might've made the mistake of trying to add wrapProgram to nativeBuildInputs way back, so it is confusing. We just need a comment explaining that wrapProgram is a convenience function also provided by the makeWrapper "package".