need to restore packages for Mono as well

bodewig · bodewig · commit a10246b33ccf · 2023-03-14T19:36:56.000+01:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -42,6 +42,8 @@ for:
   - matrix:
       only:
         - image: Ubuntu
+    before_build:
+      - nuget restore XMLUnit.NET.NetFramework.sln
     build_script:
       - xbuild XMLUnit.NET.NetFramework.sln
 
