Factor out line numbering from review into a separate package?

[ghost]

Okay, maybe this is a little too much to ask, but I can't resist.

I first found about the ability to add line numbers when writing an ACM paper, and I was amazed by just how nice the revew line numbering is in acmart-acmsmall.

When writing for myself, much later, I tried to find out which latex packages have this option independently of acmart, since, after all, acmart is a giant meta-package, which is using a lot of features from other packages.

To my great (unpleasant) surprise, I found literally just two packages which do line numbering: lineno, and reledmac. I tried both of them, and found results to be much worse than with acmart. lineno is prone to placing line numbers in the wrong places, and reledmac just is very fragle with mathematics, as it is aimed at humanities.

Would it be possible to factor out acmart's line numbering into a separate package for use all over the TeX world?