Top-level defs cause "cannot merge" errors in ide

[drdozer]

I get a lot of these "cannot merge" errors when editing dotty code in visual studio code, run with sbt launchIDE. I can't nail down exactly what triggers it, other than it is a lot worse when the package contains the new allowed top-level declarations. Top-level defs and implied instances. In this case, helloWorld is a top-level def.

[smarter]

Do you have a github repo where the problem is reproducible?

[drdozer]

Trying to build one that's minimal which shows the fault reliably ... it seems to be a bit of a heizenbug

[drdozer]

cannotmerge.zip

Here's a self-contained project. It fairly reliably does this for me in the file cannotMergeg.

sbt
launchIDE

Navigate in vs code to src/main/scala/cannotMerge/Routs.scala. Hover over line 11, the bracket before choice.

[smarter]

Fixed by #6611, thanks for the minimization!