Conflicting Xtext versions when installing SADL in Eclipse 2020-12?

[agabaldon]

I installed Eclipse 2020-12 and then tried to install the latest SADL release (3.5.0) and I get the following:

the error shows that Eclipse installed with Xtext 2.24 and SADL wants 2.23:

Is it safe to switch SADL to Xtext 2.24 ? Thought I'd ask before just trying it.

[tuxji]

Hi @agabaldon did you try the other choice (Update my installation to be compatible with the items being installed)? SADL bundles Xtext 2.23 so if you choose that option, both Xtext 2.23 and SADL can be installed together when necessary. If that option doesn't work anymore (I thought it worked before), then yes, we will need to switch SADL to Xtext 2.24 or allow SADL to use a range of Xtext versions (e.g., 2.23 or later). Let me know you find out.

[crapo]

@agabaldon , @tuxji : At least on Linux, if I download Eclipse 2020-12 for Java Developers, then the installation goes without a hitch. If you download Eclipse 2020-12 for DSL and Java Developers it will already have Xtext 2.24 installed, hence the conflict.
@kittaakos , other than by trial, is there any way to anticipate when a new version of Xtext is likely to be incompatible with SADL?

[agabaldon]

@tuxji yes, I did. That seems to work fine.
@crapo I used Eclipse for DSL & Java. I expect that using Eclipse for Java would work on MacOS as well.
Once we know what's the best way to go, we should update the install instructions.

[kittaakos]

incompatible with SADL?

@crapo, there will be a few breaking API changes such as this, but I do not know much about the Xtext/LSP4J release cycles. Besides experimental (@Beta) language-server API changes, there should not be any.