> (anymore?) Guix has never provided the 'cc' alias for GCC AFAIR.
Perhaps you were previously using 'clang-toolchain', which does symlink cc to clang? That's something that we, Guix, explicitly add; not upstream. It's unfortunate that Guix promotes a non-GPL compiler over GCC this way. Kind regards, T G-R Sent on the go. Excuse or enjoy my brevity.