Merge pull request #261135 from dotlambda/nixos-iptsd-init

nixos/iptsd: init

nixos/modules/module-list.nix

···
   ./services/hardware/hddfancontrol.nix
   ./services/hardware/illum.nix
   ./services/hardware/interception-tools.nix
+  ./services/hardware/iptsd.nix
   ./services/hardware/irqbalance.nix
   ./services/hardware/joycond.nix
   ./services/hardware/kanata.nix

nixos/modules/services/hardware/iptsd.nix

···
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.services.iptsd;
+  format = pkgs.formats.ini { };
+  configFile = format.generate "iptsd.conf" cfg.config;
+in {
+  options.services.iptsd = {
+    enable = lib.mkEnableOption (lib.mdDoc "the userspace daemon for Intel Precise Touch & Stylus");
+
+    config = lib.mkOption {
+      default = { };
+      description = lib.mdDoc ''
+        Configuration for IPTSD. See the
+        [reference configuration](https://github.com/linux-surface/iptsd/blob/master/etc/iptsd.conf)
+        for available options and defaults.
+      '';
+      type = lib.types.submodule {
+        freeformType = format.type;
+        options = {
+          Touch = {
+            DisableOnPalm = lib.mkOption {
+              default = false;
+              description = lib.mdDoc "Ignore all touch inputs if a palm was registered on the display.";
+              type = lib.types.bool;
+            };
+            DisableOnStylus = lib.mkOption {
+              default = false;
+              description = lib.mdDoc "Ignore all touch inputs if a stylus is in proximity.";
+              type = lib.types.bool;
+            };
+          };
+          Stylus = {
+            Disable = lib.mkOption {
+              default = false;
+              description = lib.mdDoc "Disables the stylus. No stylus data will be processed.";
+              type = lib.types.bool;
+            };
+          };
+        };
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.packages = [ pkgs.iptsd ];
+    environment.etc."iptsd.conf".source = configFile;
+    systemd.services."iptsd@".restartTriggers = [ configFile ];
+    services.udev.packages = [ pkgs.iptsd ];
+  };
+
+  meta.maintainers = with lib.maintainers; [ dotlambda ];
+}

pkgs/applications/misc/iptsd/default.nix

···
     substituteInPlace etc/meson.build \
       --replace "install_dir: unitdir" "install_dir: '$out/etc/systemd/system'" \
       --replace "install_dir: rulesdir" "install_dir: '$out/etc/udev/rules.d'"
+    substituteInPlace etc/systemd/iptsd-find-service \
+      --replace "iptsd-find-hidraw" "$out/bin/iptsd-find-hidraw" \
+      --replace "systemd-escape" "${lib.getExe' systemd "systemd-escape"}"
     substituteInPlace etc/udev/50-iptsd.rules.in \
-      --replace "/bin/systemd-escape" "${systemd}/bin/systemd-escape"
+      --replace "/bin/systemd-escape" "${lib.getExe' systemd "systemd-escape"}"
   '';
 
   mesonFlags = [