I want my locale to be British English (en_GB.UTF-8) and in my configuration.nix
I have
i18n.defaultLocale = "en_GB.UTF-8";
time.timeZone = "Europe/London"
But I’m getting errors like this when I start my shell:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_GB",
LC_ALL = (unset),
LC_MEASUREMENT = "en_IO.UTF-8",
LC_TIME = "en_GB.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").
What am I missing?