(I'm the author)

You're right, I should have specified -- it is glibc 2.32-48 . This the source specifying how glibc is built: https://github.com/NixOS/nixpkgs/blob/97c5d0cbe76901da0135b0... .

I've amended the article so that it says `glibc` rather than `libc`, and added a sidenote specifying the version.

I link to it statically as indicated in the gist, although I believe that shouldn't matter. Also see https://gist.github.com/bitonic/d0f5a0a44e37d4f0be03d34d47ac... .

Note that the hardware is not particularly recent (Q3 2017), but we tend to rent servers which are not exactly on the bleeding edge, so that was my platform.