mkarchiso: unset LANGUAGE
LC_ALL=C.UTF-8, unlike LC_ALL=C, does not override LANGUAGE.
See https://wiki.archlinux.org/title/Locale#LC_ALL:_troubleshooting.
Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to accountsupport@archlinux.org, with your desired username, if you want to get access. Sorry for the inconvenience.
LC_ALL=C.UTF-8, unlike LC_ALL=C, does not override LANGUAGE.
See https://wiki.archlinux.org/title/Locale#LC_ALL:_troubleshooting.