nixpkgs/nixos/modules/programs/environment.nix

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# This module defines a standard configuration for NixOS global environment.
# Most of the stuff here should probably be moved elsewhere sometime.
{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.environment;
in
{
config = {
environment.variables =
{ LOCALE_ARCHIVE = "/run/current-system/sw/lib/locale/locale-archive";
LOCATE_PATH = "/var/cache/locatedb";
NIXPKGS_CONFIG = "/etc/nix/nixpkgs-config.nix";
NIX_PATH =
[ "/nix/var/nix/profiles/per-user/root/channels/nixos"
"nixpkgs=/etc/nixos/nixpkgs"
"nixos-config=/etc/nixos/configuration.nix"
];
PAGER = "less -R";
EDITOR = "nano";
};
environment.profiles =
[ "$HOME/.nix-profile"
"/nix/var/nix/profiles/default"
"/run/current-system/sw"
];
# !!! fix environment.profileVariables definition and then move
# most of these elsewhere
environment.profileVariables = (i:
{ PATH = [ "${i}/bin" "${i}/sbin" "${i}/lib/kde4/libexec" ];
MANPATH = [ "${i}/man" "${i}/share/man" ];
INFOPATH = [ "${i}/info" "${i}/share/info" ];
PKG_CONFIG_PATH = [ "${i}/lib/pkgconfig" ];
TERMINFO_DIRS = [ "${i}/share/terminfo" ];
PERL5LIB = [ "${i}/lib/perl5/site_perl" ];
ALSA_PLUGIN_DIRS = [ "${i}/lib/alsa-lib" ];
GST_PLUGIN_PATH = [ "${i}/lib/gstreamer-0.10" ];
KDEDIRS = [ "${i}" ];
STRIGI_PLUGIN_PATH = [ "${i}/lib/strigi/" ];
QT_PLUGIN_PATH = [ "${i}/lib/qt4/plugins" "${i}/lib/kde4/plugins" ];
QTWEBKIT_PLUGIN_PATH = [ "${i}/lib/mozilla/plugins/" ];
GTK_PATH = [ "${i}/lib/gtk-2.0" ];
XDG_CONFIG_DIRS = [ "${i}/etc/xdg" ];
XDG_DATA_DIRS = [ "${i}/share" ];
MOZ_PLUGIN_PATH = [ "${i}/lib/mozilla/plugins" ];
});
environment.extraInit =
''
# reset TERM with new TERMINFO available (if any)
export TERM=$TERM
unset ASPELL_CONF
for i in ${concatStringsSep " " (reverseList cfg.profiles)} ; do
if [ -d "$i/lib/aspell" ]; then
export ASPELL_CONF="dict-dir $i/lib/aspell"
fi
done
export NIX_USER_PROFILE_DIR="/nix/var/nix/profiles/per-user/$USER"
export NIX_PROFILES="${concatStringsSep " " (reverseList cfg.profiles)}"
'';
};
}