# This module defines a standard configuration for NixOS global environment.
# Most of the stuff here should probably be moved elsewhere sometime.
{ config, lib, ... }:
let
cfg = config.environment;
in
{
config = {
environment.variables = {
NIXPKGS_CONFIG = "/etc/nix/nixpkgs-config.nix";
# note: many programs exec() this directly, so default options for less must not
# be specified here; do so in the default value of programs.less.envVariables instead
PAGER = lib.mkDefault "less";
EDITOR = lib.mkDefault "nano";
};
# since we set PAGER to this above, make sure it's installed
programs.less.enable = true;
environment.profiles = lib.mkAfter [
"/nix/var/nix/profiles/default"
"/run/current-system/sw"
];
environment.sessionVariables = {
XDG_CONFIG_DIRS = [ "/etc/xdg" ]; # needs to be before profile-relative paths to allow changes through environment.etc
# TODO: move most of these elsewhere
environment.profileRelativeSessionVariables = {
PATH = [ "/bin" ];
INFOPATH = [
"/info"
"/share/info"
QTWEBKIT_PLUGIN_PATH = [ "/lib/mozilla/plugins/" ];
GTK_PATH = [
"/lib/gtk-2.0"
"/lib/gtk-3.0"
"/lib/gtk-4.0"
XDG_CONFIG_DIRS = [ "/etc/xdg" ];
XDG_DATA_DIRS = [ "/share" ];
LIBEXEC_PATH = [ "/libexec" ];
environment.pathsToLink = [
environment.extraInit = ''
export NIX_USER_PROFILE_DIR="/nix/var/nix/profiles/per-user/$USER"
export NIX_PROFILES="${builtins.concatStringsSep " " (lib.reverseList cfg.profiles)}"
'';
}