Allo setting jvm arguments in nixos modules

nix/configuration-test.nix

@@ -35,6 +35,7 @@ in
     waitForTarget = "solr-init.target";
     bind.address = "0.0.0.0";
     base-url = "http://localhost:7878";
+    jvmArgs = [ "-J-Xmx2g" ];
     inherit full-text-search;
   };
   services.docspell-restserver = {
@@ -65,6 +66,8 @@ in
       pkgs.docspell.joex
       pkgs.jq
       pkgs.telnet
+      pkgs.htop
+      pkgs.openjdk
     ];
 
 

nix/module-joex.nix

@@ -214,6 +214,12 @@ in {
           is running on the same machine.
         '';
       };
+      jvmArgs = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "-J-Xmx1G" ];
+        description = "The options passed to the executable for setting jvm arguments.";
+      };
 
 
       app-id = mkOption {
@@ -1199,7 +1205,8 @@ in {
 
     systemd.services.docspell-joex =
       let
-        cmd = "${pkgs.docspell.joex}/bin/docspell-joex ${configFile}";
+        args = builtins.concatStringsSep " " cfg.jvmArgs;
+        cmd = "${pkgs.docspell.joex}/bin/docspell-joex ${args} -- ${configFile}";
         waitTarget =
           if cfg.waitForTarget != null
           then

nix/module-server.nix

@@ -89,6 +89,13 @@ in {
           user is created.
         '';
       };
+      jvmArgs = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "-J-Xmx1G" ];
+        description = "The options passed to the executable for setting jvm arguments.";
+      };
+
 
       app-name = mkOption {
         type = types.str;
@@ -513,7 +520,8 @@ in {
 
     systemd.services.docspell-restserver =
     let
-      cmd = "${pkgs.docspell.server}/bin/docspell-restserver ${configFile}";
+      args = builtins.concatStringsSep " " cfg.jvmArgs;
+      cmd = "${pkgs.docspell.server}/bin/docspell-restserver ${args} -- ${configFile}";
     in
     {
       description = "Docspell Rest Server";