hint: Consider installing the `glibc-locales' package and defining `GUIX_LOCPATH', along these lines: guix install glibc-locales export GUIX_LOCPATH="$HOME/.guix-profile/lib/locale" See the "Application Setup" section in the manual, for more info. Starting download of /gnu/store/7wpaa3cq64j1r8d9arbhmicgyaqm40q0-userspace-rcu-0.14.1.tar.bz2 From https://www.lttng.org/files/urcu/userspace-rcu-0.14.1.tar.bz2... following redirection to `https://lttng.org/files/urcu/userspace-rcu-0.14.1.tar.bz2'...  …0.14.1.tar.bz2 654KiB 0B/s 00:00 ▕ ▏ 0.0%  …0.14.1.tar.bz2 654KiB 417KiB/s 00:00 ▕█▊ ▏ 9.8%  …0.14.1.tar.bz2 654KiB 841KiB/s 00:00 ▕████████▊ ▏ 48.9%  …0.14.1.tar.bz2 654KiB 1.4MiB/s 00:00 ▕██████████████████▏ 100.0%