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home-manager/modules/config/i18n.nix
Robert Helgesson 5f433eb164
Move platform check into modules
Before, loading a module would be guarded by an optional platform
condition. This made it possible to avoid loading and evaluating a
module if it did not support the host platform.

Unfortunately, this made it impossible to share a single configuration
between GNU/Linux and Darwin hosts, which some wish to do.

This removes the conditional load and instead inserts host platform
assertions in the modules that are platform specific.

Fixes #1906
2021-07-18 20:43:22 +02:00

46 lines
1.4 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
{ lib, pkgs, ... }:
with lib;
let
inherit (pkgs.glibcLocales) version;
archivePath = "${pkgs.glibcLocales}/lib/locale/locale-archive";
# lookup the version of glibcLocales and set the appropriate environment vars
localeVars = if versionAtLeast version "2.27" then {
LOCALE_ARCHIVE_2_27 = archivePath;
} else if versionAtLeast version "2.11" then {
LOCALE_ARCHIVE_2_11 = archivePath;
} else
{ };
in {
meta.maintainers = with maintainers; [ midchildan ];
config = mkIf pkgs.hostPlatform.isLinux {
# For shell sessions.
home.sessionVariables = localeVars;
# For desktop apps.
systemd.user.sessionVariables = localeVars;
};
}