From 533efd0cfd4a104ced54000f392b9bb1926d9973 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6gler?= <ck3d@gmx.de>
Date: Sat, 25 Nov 2017 22:41:19 +0100
Subject: [PATCH] initial NixOS module for LIRC

---
 nixos/modules/misc/ids.nix               |  2 +
 nixos/modules/module-list.nix            |  1 +
 nixos/modules/services/hardware/lirc.nix | 85 ++++++++++++++++++++++++
 3 files changed, 88 insertions(+)
 create mode 100644 nixos/modules/services/hardware/lirc.nix

diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index aafeb997c326..3d34fb973e74 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -329,6 +329,7 @@
       # kvm = 302; # unused
       # render = 303; # unused
       zeronet = 304;
+      lirc = 305;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -618,6 +619,7 @@
       kvm = 302; # default udev rules from systemd requires these
       render = 303; # default udev rules from systemd requires these
       zeronet = 304;
+      lirc = 305;
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index f51a30aec2e9..298136443561 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -272,6 +272,7 @@
   ./services/hardware/interception-tools.nix
   ./services/hardware/irqbalance.nix
   ./services/hardware/lcd.nix
+  ./services/hardware/lirc.nix
   ./services/hardware/nvidia-optimus.nix
   ./services/hardware/pcscd.nix
   ./services/hardware/pommed.nix
diff --git a/nixos/modules/services/hardware/lirc.nix b/nixos/modules/services/hardware/lirc.nix
new file mode 100644
index 000000000000..a66a7fbf495f
--- /dev/null
+++ b/nixos/modules/services/hardware/lirc.nix
@@ -0,0 +1,85 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.lirc;
+in {
+
+  ###### interface
+
+  options = {
+    services.lirc = {
+
+      enable = mkEnableOption "LIRC daemon";
+
+      options = mkOption {
+        type = types.lines;
+        example = ''
+          [lircd]
+          nodaemon = False
+        '';
+        description = "LIRC default options descriped in man:lircd(8) (<filename>lirc_options.conf</filename>)";
+      };
+
+      configs = mkOption {
+        type = types.listOf types.lines;
+        description = "Configurations for lircd to load, see man:lircd.conf(5) for details (<filename>lircd.conf</filename>)";
+      };
+
+      extraArguments = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        description = "Extra arguments to lircd.";
+      };
+
+    };
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+
+    # Note: LIRC executables raises a warning, if lirc_options.conf do not exists
+    environment.etc."lirc/lirc_options.conf".text = cfg.options;
+
+    environment.systemPackages = [ pkgs.lirc ];
+
+    systemd.sockets.lircd = {
+      description = "LIRC daemon socket";
+      wantedBy = [ "sockets.target" ];
+      socketConfig = {
+        ListenStream = "/run/lirc/lircd";
+        SocketUser = "lirc";
+        SocketMode = "0660";
+      };
+    };
+
+    systemd.services.lircd = let
+      configFile = pkgs.writeText "lircd.conf" (builtins.concatStringsSep "\n" cfg.configs);
+    in {
+      description = "LIRC daemon service";
+      after = [ "network.target" ];
+
+      unitConfig.Documentation = [ "man:lircd(8)" ];
+
+      serviceConfig = {
+        RuntimeDirectory = "lirc";
+        ExecStart = ''
+          ${pkgs.lirc}/bin/lircd --nodaemon \
+            ${escapeShellArgs cfg.extraArguments} \
+            ${configFile}
+        '';
+        User = "lirc";
+      };
+    };
+
+    users.users.lirc = {
+      uid = config.ids.uids.lirc;
+      group = "lirc";
+      description = "LIRC user for lircd";
+    };
+
+    users.groups.lirc.gid = config.ids.gids.lirc;
+  };
+}