This is to prevent e.g. the myriad of warnings during setup:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_ADDRESS = "fi_FI.UTF-8",
LC_NAME = "fi_FI.UTF-8",
LC_MONETARY = "fi_FI.UTF-8",
LC_PAPER = "fi_FI.UTF-8",
LC_IDENTIFICATION = "fi_FI.UTF-8",
LC_TELEPHONE = "fi_FI.UTF-8",
LC_MEASUREMENT = "fi_FI.UTF-8",
LC_TIME = "fi_FI.UTF-8",
LC_NUMERIC = "fi_FI.UTF-8",
LANG = "en_GB.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_GB.UTF-8").
locale: Cannot set LC_ALL to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory