rewrite-to-python: add test for hocon includes, fix generator bug

flake.nix

@@ -39,6 +39,18 @@
 
     overlays.default = final: prev: self.packages.${final.system};
 
+    checks = forAllSystems (system: pkgs: {
+      hocon-include = let
+        format = pkgs.formats.hocon { };
+      in format.generate "minecraft-kartverket-test-hocon-include" {
+        _includes = [
+          (format.lib.mkInclude "${self.packages.${system}.bluemap-export}/overworld.hocon")
+          (format.lib.mkInclude "${self.packages.${system}.bluemap-export}/nether.hocon")
+          (format.lib.mkInclude "${self.packages.${system}.bluemap-export}/the-end.hocon")
+        ];
+      };
+    });
+
     packages = forAllSystems (system: pkgs: {
       default = self.packages.${system}.mckart;
 

src/bluemap_exporter/exporter.py

@@ -72,7 +72,7 @@ def to_hocon(x: Any) -> str:
         return f"[\n{'\n'.join(items)}\n]"
     elif isinstance(x, dict):
         items = [
-            f'  {k}: {indent(to_hocon(v), '  ').removeprefix('  ')}'
+            f'  "{k}": {indent(to_hocon(v), '  ').removeprefix('  ')}'
             for k, v in x.items()
         ]
         return f"{{\n{'\n'.join(items)}\n}}"