Migrate some modules to Scala 3

orbeon / orbeon-forms

Orbeon Forms is an open source web forms solution. It includes an XForms engine, the Form Builder web-based form editor, and the Form Runner runtime.

http://www.orbeon.com/

GNU Lesser General Public License v2.1

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Migrate some modules to Scala 3 #6491

Open ebruchez opened 1 month ago

ebruchez commented 1 month ago

Now that we are on Scala 2.13 (#4086), we can consider some migrations to Scala 3. We should be able to migrate some modules one by one.

The only drawback I can think of is that IntelliJ support might not be up to par yet.

obruchez commented 1 month ago

The incorrect warning unused value of type scala.xml.NodeBuffer (add : Unit to discard silently) is a bug in the compiler: https://github.com/scala/bug/issues/12658

ebruchez commented 1 month ago

Started using Scala 3 in a few modules. I have encountered issues, and given up for now, with some modules:

orbeon-proxy-portlet: issue with the scala-xml dependency
orbeon-servlet-support: can't find implementations for trait RequestRemoveHeaders from Scala 2.13 users of that module