add nixos module

flake.nix

@@ -95,5 +95,7 @@
       packages = { inherit start; };
       defaultPackage.x86_64-linux = start;
 
+      nixosModule = (import ./module.nix);
+
     };
 }

module.nix

@@ -0,0 +1,53 @@
+{
+  config,
+  lib,
+  pkgs,
+  options,
+  ...
+}:
+let
+
+  cfg = config.services.verwaltungstracker;
+
+in
+{
+
+  options = {
+    services.verwaltungstracker = {
+
+      enable = lib.mkEnableOption "Verwaltungstracker web app";
+
+    } // options.services.froide-govplan.settings;
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    nixpkgs.overlays = [
+      (self: super: {
+        froide-govplan = super.froide-govplan.overridePythonAttrs (oldAttrs: {
+          src = pkgs.fetchFromGitea {
+            domain = "git.project-insanity.org";
+            owner = "onny";
+            repo = "verwaltungstracker";
+            rev = "e5acfdf19d5af71bc5223c72713c128f3948f39f";
+            hash = "sha256-SRxPKherMz9xv/1XZjmwYg74r7Qln+vfLWgHyG5RbxQ=";
+          };
+          dependencies = oldAttrs.dependencies ++ [ oldAttrs.passthru.python.pkgs.mastodon-py ];
+          passthru = oldAttrs.passthru // {
+            pythonPath = "${pkgs.python3.pkgs.makePythonPath [pkgs.python3.pkgs.mastodon-py]}:${oldAttrs.passthru.pythonPath}";
+          };
+        });
+      })
+    ];
+
+    services.froide-govplan = {
+      enable = true;
+      settings = cfg.settings;
+    };
+
+  };
+
+  meta = {
+    maintainers = with lib.maintainers; [ onny ];
+  };
+}