The GMSL is a godsend for those of us stuck on GNU Make 3.81 for... "reasons"
("reasons" being on macOS and limited to Xcode Command-Line Tools, which provides a number of GNU tools frozen to the last version that's GPLv2, before GPLv3.
Incidentally, that's also why macOS switched to Zsh by default, because Apple was tired of backporting security fixes to their Bash 3.2.57
/rant)