[mark@mark-optiplex9020 ~]$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
It seems they also changed the error message (for the same issue=some locale value called “Default”). They are watching us!!
For some programs (perl related?), when one of the individual LC_ vars had no value, they assumed Default, and looking for an actual Default lovale, which does not exist in Arch.