Set main to run net7.0 until sdk+runtime are supported

[LoopedBard3]

Set main to run net7.0 until sdk+runtime are supported per: dotnet/runtime#77913 (comment).

@radical is this the fix you had in mind from the above comment?

[radical]

Honestly, I'm not sure what the correct fix would be, and there might not be one for now. AFAIU, we are not quite there with net8.0 project support, w.r.t the SDK, and runtime.
So, for now, reverting the earlier state would make sense.

What would be the impact of this change? Wouldn't we also need to change the tfm being passed to the command line?
It would be a good idea to also confirm that the correct assemblies, and runtime pack is being used from the workload.

cc @ericstj@carlossanlop

[radical]

Also, before merging this one do make sure to run a dotnet-runtime-perf+wasm build with this change.

[LoopedBard3]

Yup, got a run going atm: https://dev.azure.com/dnceng/internal/_build/results?buildId=2037521&view=results

[LoopedBard3]

Changing the main branch runs back to net7.0 and 7.0 branch will cause things to build with net7.0.

[LoopedBard3]

It looks like this fixed the wasm runs. Waiting for the rest of the test runs to finish and a review.

[LoopedBard3]

One wasm run succeeded and one had a handful of failures.

[LoopedBard3]

@radical Do you know the ETA for having net8.0 packages for wasm?

[radical]

@radical Do you know the ETA for having net8.0 packages for wasm?

AFAIK, we are waiting for other things to be in place, like a PR that would change the default TFM in dotnet/runtime to net8.0. And we can fix anything that breaks in wasm.

[caaavik-msft]

Approving in the case that the alternative solution to use net7.0 for just wasm is not suitable

[radical]

Is this used only to decide which tfm to use on dotnet/runtimemain branch?

[caaavik-msft]

yes, that is correct

[LoopedBard3]

Closing to merge #2696 as a fix instead. This will allow wasm to build targeting net7 while the rest of the builds target net8.0.

[carlossanlop]

It seems this issue is related to dotnet/runtime#77899 . FYI, I merged it.