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{pkgs, config, ...}:
###### interface
let
inherit (pkgs.lib) mkOption mkIf;
options = {
i18n = {
defaultLocale = mkOption {
default = "en_US.UTF-8";
example = "nl_NL.UTF-8";
description = "
The default locale. It determines the language for program
messages, the format for dates and times, sort order, and so on.
It also determines the character set, such as UTF-8.
";
};
supportedLocales = mkOption {
default = ["all"];
example = ["en_US.UTF-8/UTF-8" "nl_NL.UTF-8/UTF-8" "nl_NL/ISO-8859-1"];
description = ''
List of locales that the system should support. The value
<literal>"all"</literal> means that all locales supported by
Glibc will be installed. A full list of supported locales
can be found at <link
xlink:href="http://sourceware.org/cgi-bin/cvsweb.cgi/libc/localedata/SUPPORTED?cvsroot=glibc"/>.
'';
};
consoleFont = mkOption {
default = "lat9w-16";
example = "LatArCyrHeb-16";
description = "
The font used for the virtual consoles. Leave empty to use
whatever the <command>setfont</command> program considers the
default font.
";
};
consoleKeyMap = mkOption {
default = "us";
example = "fr";
description = "
The keyboard mapping table for the virtual consoles.
";
};
};
};
in
###### implementation
let
glibcLocales = pkgs.glibcLocales.override {
allLocales = pkgs.lib.any (x: x == "all") config.i18n.supportedLocales;
locales = config.i18n.supportedLocales;
};
in
{
require = options;
environment.systemPackages = [glibcLocales];
environment.shellInit =
''
export LANG=${config.i18n.defaultLocale}
export LOCALE_ARCHIVE=/var/run/current-system/sw/lib/locale/locale-archive
'';
}