Files
home-manager/modules/config/i18n.nix

81 lines
2.3 KiB
Nix

# The glibc package in Nixpkgs is patched to make it possible to specify
# an alternative path for the locale archive through a special environment
# variable. This would allow different versions of glibc to coexist on the
# same system because each version of glibc could look up different paths
# for its locale archive should the archive format ever change in
# incompatible ways.
#
# See also:
# - localedef(1)
# - https://nixos.org/manual/nixpkgs/stable/#locales
# - https://github.com/NixOS/nixpkgs/issues/38991
#
# Note, the name of the said environment variable gets updated with each
# breaking release of the glibcLocales package. Periodically check the link
# below for changes:
# https://github.com/NixOS/nixpkgs/blob/nixpkgs-unstable/pkgs/development/libraries/glibc/nix-locale-archive.patch
{
config,
lib,
nixosConfig,
pkgs,
...
}:
let
inherit (config.i18n) glibcLocales;
inherit (glibcLocales) version;
archivePath = "${glibcLocales}/lib/locale/locale-archive";
# lookup the version of glibcLocales and set the appropriate environment vars
localeVars =
if lib.versionAtLeast version "2.27" then
{
LOCALE_ARCHIVE_2_27 = archivePath;
}
else if lib.versionAtLeast version "2.11" then
{
LOCALE_ARCHIVE_2_11 = archivePath;
}
else
{ };
in
{
meta.maintainers = with lib.maintainers; [ midchildan ];
options = {
i18n.glibcLocales = lib.mkOption {
type = lib.types.path;
description = ''
Customized `glibcLocales` package providing
the `LOCALE_ARCHIVE_*` environment variable.
This option only applies to the Linux platform.
If Home Manager is installed as a NixOS submodule, this
option defaults to NixOS' {var}`i18n.glibcLocales`.
'';
example = lib.literalExpression ''
pkgs.glibcLocales.override {
allLocales = false;
locales = [ "en_US.UTF-8/UTF-8" ];
}
'';
default = nixosConfig.i18n.glibcLocales or pkgs.glibcLocales;
defaultText = lib.literalExpression "nixosConfig.i18n.glibcLocales or pkgs.glibcLocales";
};
};
config = lib.mkIf pkgs.stdenv.hostPlatform.isLinux {
# For shell sessions.
home.sessionVariables = localeVars;
# For desktop apps.
systemd.user.sessionVariables = localeVars;
};
}