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https://github.com/SebastianWendel/nixpkgs.git
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650492c5c8
This cuts ~100 MB from the system closure. Issue #7117.
100 lines
2.5 KiB
Nix
100 lines
2.5 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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glibcLocales = pkgs.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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in
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{
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###### interface
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options = {
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i18n = {
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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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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="http://sourceware.org/cgi-bin/cvsweb.cgi/libc/localedata/SUPPORTED?cvsroot=glibc"/>.
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'';
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};
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consoleFont = mkOption {
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type = types.str;
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default = "lat9w-16";
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example = "LatArCyrHeb-16";
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description = ''
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The font used for the virtual consoles. Leave empty to use
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whatever the <command>setfont</command> program considers the
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default font.
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'';
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};
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consoleKeyMap = mkOption {
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type = mkOptionType {
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name = "string or path";
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check = t: (isString t || types.path.check t);
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};
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default = "us";
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example = "fr";
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description = ''
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The keyboard mapping table for the virtual consoles.
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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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optional (config.i18n.supportedLocales != []) glibcLocales;
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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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};
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systemd.globalEnvironment = mkIf (config.i18n.supportedLocales != []) {
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LOCALE_ARCHIVE = "${glibcLocales}/lib/locale/locale-archive";
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};
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# ‘/etc/locale.conf’ is used by systemd.
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environment.etc = singleton
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{ target = "locale.conf";
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source = pkgs.writeText "locale.conf"
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''
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LANG=${config.i18n.defaultLocale}
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'';
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};
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};
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}
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