119 lines
3.4 KiB
Nix
119 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.dconf;
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toDconfIni = generators.toINI { mkKeyValue = mkIniKeyValue; };
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mkIniKeyValue = key: value: "${key}=${toString (hm.gvariant.mkValue value)}";
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# The dconf keys managed by this configuration. We store this as part of the
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# generation state to be able to reset keys that become unmanaged during
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# switch.
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stateDconfKeys = pkgs.writeText "dconf-keys.json" (builtins.toJSON
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(concatLists (mapAttrsToList
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(dir: entries: mapAttrsToList (key: _: "/${dir}/${key}") entries)
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cfg.settings)));
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in {
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meta.maintainers = [ maintainers.rycee ];
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options = {
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dconf = {
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enable = mkOption {
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type = types.bool;
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default = true;
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visible = false;
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description = ''
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Whether to enable dconf settings.
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</para><para>
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Note, if you use NixOS then you must add
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<code>programs.dconf.enable = true</code>
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to your system configuration. Otherwise you will see a systemd error
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message when your configuration is activated.
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'';
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};
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settings = mkOption {
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type = with types; attrsOf (attrsOf hm.types.gvariant);
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default = { };
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example = literalExpression ''
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{
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"org/gnome/calculator" = {
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button-mode = "programming";
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show-thousands = true;
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base = 10;
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word-size = 64;
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window-position = lib.hm.gvariant.mkTuple [100 100];
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};
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}
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'';
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description = ''
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Settings to write to the dconf configuration system.
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'';
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};
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};
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};
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config = mkIf (cfg.enable && cfg.settings != { }) {
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# Make sure the dconf directory exists.
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xdg.configFile."dconf/.keep".source = builtins.toFile "keep" "";
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home.extraBuilderCommands = ''
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mkdir -p $out/state/
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ln -s ${stateDconfKeys} $out/state/${stateDconfKeys.name}
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'';
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home.activation.dconfSettings = hm.dag.entryAfter [ "installPackages" ] (let
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iniFile = pkgs.writeText "hm-dconf.ini" (toDconfIni cfg.settings);
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statePath = "state/${stateDconfKeys.name}";
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cleanup = pkgs.writeShellScript "dconf-cleanup" ''
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set -euo pipefail
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${config.lib.bash.initHomeManagerLib}
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PATH=${makeBinPath [ pkgs.dconf pkgs.jq ]}''${PATH:+:}$PATH
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oldState="$1"
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newState="$2"
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# Can't do cleanup if we don't know the old state.
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if [[ ! -f $oldState ]]; then
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exit 0
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fi
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# Reset all keys that are present in the old generation but not the new
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# one.
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jq -r -n \
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--slurpfile old "$oldState" \
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--slurpfile new "$newState" \
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'($old[] - $new[])[]' \
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| while read -r key; do
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$VERBOSE_ECHO "Resetting dconf key \"$key\""
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$DRY_RUN_CMD $DCONF_DBUS_RUN_SESSION dconf reset "$key"
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done
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'';
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in ''
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if [[ -v DBUS_SESSION_BUS_ADDRESS ]]; then
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export DCONF_DBUS_RUN_SESSION=""
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else
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export DCONF_DBUS_RUN_SESSION="${pkgs.dbus}/bin/dbus-run-session --dbus-daemon=${pkgs.dbus}/bin/dbus-daemon"
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fi
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if [[ -v oldGenPath ]]; then
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${cleanup} \
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"$oldGenPath/${statePath}" \
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"$newGenPath/${statePath}"
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fi
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$DRY_RUN_CMD $DCONF_DBUS_RUN_SESSION ${pkgs.dconf}/bin/dconf load / < ${iniFile}
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unset DCONF_DBUS_RUN_SESSION
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'');
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};
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}
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