nixpkgs/nixos/modules/programs/dconf.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.dconf;
cfgDir = pkgs.symlinkJoin {
name = "dconf-system-config";
paths = map (x: "${x}/etc/dconf") cfg.packages;
postBuild = ''
mkdir -p $out/profile
mkdir -p $out/db
'' + (
concatStringsSep "\n" (
mapAttrsToList (
name: path: ''
ln -s ${path} $out/profile/${name}
''
) cfg.profiles
)
) + ''
${pkgs.dconf}/bin/dconf update $out/db
'';
};
in
{
###### interface
options = {
programs.dconf = {
enable = mkEnableOption "dconf";
profiles = mkOption {
type = types.attrsOf types.path;
default = {};
description = "Set of dconf profile files, installed at <filename>/etc/dconf/profiles/<replaceable>name</replaceable></filename>.";
internal = true;
};
packages = mkOption {
type = types.listOf types.package;
default = [];
description = "A list of packages which provide dconf profiles and databases in <filename>/etc/dconf</filename>.";
};
};
};
###### implementation
config = mkIf (cfg.profiles != {} || cfg.enable) {
environment.etc.dconf = mkIf (cfg.profiles != {} || cfg.packages != []) {
source = cfgDir;
};
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services.dbus.packages = [ pkgs.dconf ];
# For dconf executable
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environment.systemPackages = [ pkgs.dconf ];
# Needed for unwrapped applications
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environment.variables.GIO_EXTRA_MODULES = mkIf cfg.enable [ "${pkgs.dconf.lib}/lib/gio/modules" ];
};
}