2020-04-24 23:36:52 +00:00
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{ config, lib, pkgs, ... }:
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with lib;
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{
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###### interface
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options = {
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i18n = {
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glibcLocales = mkOption {
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type = types.path;
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default = pkgs.buildPackages.glibcLocales.override {
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allLocales = any (x: x == "all") config.i18n.supportedLocales;
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locales = config.i18n.supportedLocales;
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};
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example = literalExample "pkgs.glibcLocales";
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description = ''
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Customized pkg.glibcLocales package.
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Changing this option can disable handling of i18n.defaultLocale
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and supportedLocale.
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'';
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};
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defaultLocale = mkOption {
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type = types.str;
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default = "en_US.UTF-8";
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example = "nl_NL.UTF-8";
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description = ''
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The default locale. It determines the language for program
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messages, the format for dates and times, sort order, and so on.
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It also determines the character set, such as UTF-8.
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'';
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};
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extraLocaleSettings = mkOption {
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type = types.attrsOf types.str;
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default = {};
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example = { LC_MESSAGES = "en_US.UTF-8"; LC_TIME = "de_DE.UTF-8"; };
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description = ''
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A set of additional system-wide locale settings other than
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<literal>LANG</literal> which can be configured with
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<option>i18n.defaultLocale</option>.
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'';
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};
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supportedLocales = mkOption {
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type = types.listOf types.str;
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default = ["all"];
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example = ["en_US.UTF-8/UTF-8" "nl_NL.UTF-8/UTF-8" "nl_NL/ISO-8859-1"];
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description = ''
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List of locales that the system should support. The value
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<literal>"all"</literal> means that all locales supported by
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Glibc will be installed. A full list of supported locales
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can be found at <link
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xlink:href="https://sourceware.org/git/?p=glibc.git;a=blob;f=localedata/SUPPORTED"/>.
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'';
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};
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};
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};
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###### implementation
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config = {
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environment.systemPackages =
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2020-06-18 07:06:33 +00:00
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# We increase the priority a little, so that plain glibc in systemPackages can't win.
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optional (config.i18n.supportedLocales != []) (lib.setPrio (-1) config.i18n.glibcLocales);
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2020-04-24 23:36:52 +00:00
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environment.sessionVariables =
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{ LANG = config.i18n.defaultLocale;
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LOCALE_ARCHIVE = "/run/current-system/sw/lib/locale/locale-archive";
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} // config.i18n.extraLocaleSettings;
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systemd.globalEnvironment = mkIf (config.i18n.supportedLocales != []) {
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LOCALE_ARCHIVE = "${config.i18n.glibcLocales}/lib/locale/locale-archive";
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};
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# ‘/etc/locale.conf’ is used by systemd.
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environment.etc."locale.conf".source = pkgs.writeText "locale.conf"
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''
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LANG=${config.i18n.defaultLocale}
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${concatStringsSep "\n" (mapAttrsToList (n: v: ''${n}=${v}'') config.i18n.extraLocaleSettings)}
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'';
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};
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}
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