122 lines
3.5 KiB
Nix
122 lines
3.5 KiB
Nix
# bonsai docs: <https://sr.ht/~stacyharper/bonsai/>
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{ config, lib, pkgs, ... }:
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let
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cfg = config.sane.programs.bonsai;
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delayType = with lib; types.submodule {
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options = {
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type = mkOption {
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type = types.enum [ "delay" ];
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# default = "delay";
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};
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delay_duration = mkOption {
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type = types.int;
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description = ''
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used for "delay" types only.
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nanoseconds until the event is finalized.
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'';
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};
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transitions = mkOption {
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type = types.listOf transitionType;
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default = [];
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description = ''
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list of transitions out of this state (i.e. after completing the delay).
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'';
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};
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};
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};
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eventType = with lib; types.submodule {
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options = {
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type = mkOption {
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type = types.enum [ "event" ];
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# default = "event";
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};
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event_name = mkOption {
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type = types.str;
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description = ''
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name of event which this transition applies to.
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'';
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};
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transitions = mkOption {
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type = types.listOf transitionType;
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default = [];
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description = ''
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list of transitions out of this state.
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'';
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};
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};
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};
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execType = with lib; types.submodule {
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options = {
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type = mkOption {
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type = types.enum [ "exec" ];
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# default = "exec";
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};
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command = mkOption {
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type = types.listOf types.str;
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description = ''
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command to run when the event is triggered.
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'';
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};
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transitions = mkOption {
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type = types.listOf transitionType;
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default = [];
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description = ''
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list of transitions out of this state (i.e. after successfully executing the command)
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'';
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};
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};
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};
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isDelay = x: delayType.check x && x.type == "delay";
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isEvent = x: eventType.check x && x.type == "event";
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isExec = x: execType.check x && x.type == "exec";
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# unfortunately, `types.oneOf` is naive about submodules, so we need our own type.
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# transitionType = lib.types.oneOf [ delayType eventType execType ];
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transitionType = with lib.types; mkOptionType {
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name = "transition";
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check = x: isDelay x || isEvent x || isExec x;
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merge = loc: defs: let
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defList = builtins.map (d: d.value) defs;
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in
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if builtins.all isDelay defList then
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delayType.merge loc defs
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else if builtins.all isEvent defList then
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eventType.merge loc defs
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else if builtins.all isExec defList then
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execType.merge loc defs
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else
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mergeOneOption loc defs
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;
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};
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in
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{
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sane.programs.bonsai = {
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configOption = with lib; mkOption {
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default = {};
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type = types.submodule {
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options = {
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transitions = mkOption {
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type = types.listOf transitionType;
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default = [];
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};
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};
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};
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};
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fs.".config/bonsai/bonsai_tree.json".symlink.text = builtins.toJSON cfg.config.transitions;
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sandbox.method = "bwrap";
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sandbox.extraRuntimePaths = [
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"/" #< just needs "bonsai", but needs to create it first...
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];
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services.bonsaid = {
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description = "bonsai: programmable input dispatcher";
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partOf = [ "graphical-session" ];
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# nice -n -11 chosen arbitrarily. i hope this will allow for faster response to inputs, but without audio underruns (pipewire is -21, dino -15-ish)
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command = "nice -n -11 bonsaid -t $HOME/.config/bonsai/bonsai_tree.json";
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cleanupCommand = "rm -f $XDG_RUNTIME_DIR/bonsai";
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};
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};
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}
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