134 lines
3.4 KiB
Nix
134 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.services.fusuma;
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yamlFormat = pkgs.formats.yaml { };
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configJson = pkgs.writeText "config.json" (builtins.toJSON cfg.settings);
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configYamlRaw = pkgs.runCommand "config.yaml.raw" { } ''
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${pkgs.remarshal}/bin/json2yaml -i ${configJson} -o $out;
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'';
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# convert keys into literal numbers where necessary,
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# fusuma does not support string type finger count.
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strToInt = pkgs.writers.writePython3 "str2int" {
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libraries = [ pkgs.python3Packages.pyyaml ];
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} ''
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import yaml
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from yaml import FullLoader
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def str2int(config):
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if type(config) is not dict:
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return
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for key in list(config):
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if type(config[key]) is dict and key.isdigit():
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t = config[key]
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del config[key]
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config[int(key)] = t
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else:
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str2int(config[key])
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if __name__ == '__main__':
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path = "${configYamlRaw}"
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with open(path) as f:
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config = yaml.load(f, Loader=FullLoader)
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str2int(config)
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print(yaml.dump(config))
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'';
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configYaml = pkgs.stdenv.mkDerivation {
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name = "config.yaml";
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buildCommand = ''
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${strToInt} > $out
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'';
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};
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makeBinPath = packages:
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foldl (a: b: if a == "" then b else "${a}:${b}") ""
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(map (pkg: "${pkg}/bin") packages);
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in {
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meta.maintainers = [ hm.maintainers.iosmanthus ];
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options.services.fusuma = {
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enable = mkEnableOption
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"the fusuma systemd service to automatically enable touchpad gesture";
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package = mkOption {
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type = types.package;
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default = pkgs.fusuma;
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defaultText = literalExpression "pkgs.fusuma";
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description = "Package providing <command>fusuma</command>.";
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};
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settings = mkOption {
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type = yamlFormat.type;
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example = literalExpression ''
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{
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threshold = {
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swipe = 0.1;
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};
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interval = {
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swipe = 0.7;
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};
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swipe = {
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"3" = {
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left = {
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# GNOME: Switch to left workspace
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command = "xdotool key ctrl+alt+Right";
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};
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};
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};
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};
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'';
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description = ''
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YAML config that will override the default fusuma configuration.
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'';
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};
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extraPackages = mkOption {
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type = types.listOf types.package;
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default = with pkgs; [ coreutils ];
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defaultText = literalExpression "pkgs.coreutils";
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example = literalExpression ''
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with pkgs; [ coreutils xdotool ];
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'';
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description = ''
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Extra packages needs to bring to the scope of fusuma service.
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'';
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};
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};
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config = mkIf cfg.enable {
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assertions = [
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(lib.hm.assertions.assertPlatform "services.fusuma" pkgs
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lib.platforms.linux)
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];
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xdg.configFile."fusuma/config.yaml".source = configYaml;
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systemd.user.services.fusuma = {
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Unit = {
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Description = "Fusuma services";
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After = [ "graphical-session-pre.target" ];
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PartOf = [ "graphical-session.target" ];
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};
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Service = {
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Environment = with pkgs; "PATH=${makeBinPath cfg.extraPackages}";
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ExecStart =
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"${cfg.package}/bin/fusuma -c ${config.xdg.configHome}/fusuma/config.yaml";
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};
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Install = { WantedBy = [ "graphical-session.target" ]; };
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};
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};
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}
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