Since CentOS7 is EOL, my thought is to move to building TL's x86_64-linux binaries on Alma or Rocky Linux 8. (Since CentOS was turned into a RH beta testbed, it's useless now.) I moved tug.org to Alma 8 earlier this year. Unless a reasonably supported Debian|other version has an older libc. Looks like Alma 8's glibc is 2.28. --thanks, karl.