Hi all, Looking closer at the code, the regression seems to be in MAKE-GCC-LIBC in (gnu packages base), rather than in MAKE-GCC-TOOLCHAIN.
New minimal reproducer: --8<---------------cut here---------------start------------->8--- (use-modules (gnu packages commencement) (gnu packages gcc) (gnu packages base)) (make-gcc-libc gcc glibc-2.28) --8<---------------cut here---------------end--------------->8--- Cheers, Carl Dong cont...@carldong.me "I fight for the users"