Add systemd service for languagetool

home-manager doesn't provide a systemd service itself.
That's why we build one ourself.

That also revealed a change in our directory structure.
The structure is now documented within readme.

home.nix

@@ -43,5 +43,9 @@
     pkgs.vlc
   ];
 
-  services.dunst = import ./home/services/dunst.nix;
+  services.dunst = import ./home/configurations/dunst.nix;
+
+  systemd.user.services.languagetool = import ./home/services/languagetool.nix {
+    inherit pkgs;
+  };
 }

home/services/languagetool.nix

@@ -0,0 +1,22 @@
+{ pkgs }:
+
+{
+  Unit = {
+    Description = "Languagetool Server";
+    StartLimitBurst = 3;
+    StartLimitInterval = 400;
+  };
+
+  Service = {
+    Restart = "on-failure";
+    RestartSec = "2s";
+    # TODO: Make memory optional and configurable
+    Environment = "JAVA_TOOL_OPTIONS=-Xmx256m";
+    # TODO: Make port and allow optional and configurable
+    ExecStart = "${pkgs.languagetool}/bin/languagetool-http-server --port 8081 --allow-origin \"*\"";
+  };
+
+  Install = {
+    WantedBy = ["default.target"];
+  };
+}

readme.rst

@@ -31,6 +31,25 @@ Usage
 
 Add packages to ``home.nix`` and run ``home-manager switch``.
 
+Folder structure
+----------------
+
+The folder ``overlays`` contains overlays for nix itself.
+E.g. alter packages like patching.
+
+The folder ``home`` is related to extras for home-manager.
+It has the following sub folder:
+
+``home/configurations``
+   Holds home-manager configuration for packages / services.
+   Each file corresponds to a single package.
+   Each file is loaded within ``home.nix``.
+
+``home/services``
+   Holds custom definitions for systemd services.
+   Each file corresponds to a single service.
+   Each file is loaded within ``home.nix``.
+
 Update
 ------