feat: nixos module

1 files changed, 41 insertions, 0 deletions

diff --git a/module.nix b/module.nix
new file mode 100644
index 0000000..a50b62a
--- /dev/null
+++ b/module.nix
@@ -0,0 +1,41 @@
+inputs: { options, config, lib, pkgs, ... }:
+
+with lib; let
+  inherit (pkgs.stdenv.hostPlatform) system;
+  cfg = config.services.k95aux;
+  isEmpty = attr: length (attrNames attr) == 0;
+in {
+  options.services.k95aux = with types; {
+    enable = mkEnableOption "Auxillary Corsair K95 keys";
+    package = mkOption {
+      type = package;
+      default = inputs.self.packages.${system}.k95aux;
+    };
+    mapping = mkOption {
+      type = attrsOf types.ints.u8;
+      default = {};
+    };
+  };
+
+  config = let
+    mapping = strings.concatMapAttrsStringSep "\n" (key: code: "${key} ${toString code}") cfg.mapping;
+  in mkIf cfg.enable {
+    systemd.services.k95aux = {
+      description = "Auxillary Corsair K95 keys service";
+      wantedBy = [ "multi-user.target" ];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/k95aux";
+        Restart = "on-failure";
+      };
+
+      restartTriggers = [
+        mapping
+      ];
+    };
+
+    environment.etc = mkIf (!isEmpty cfg.mapping) {
+      "k95aux/mapping".text = mapping;
+    };
+  };
+}