Using kotlin 2.0.0-beta1 and the compose compiler snapshot for it (

1.5.5-dev-k2.0.0-Beta1-06b8ae672a4

), i see lots of

Cannot access class 'androidx.compose.runtime.internal.ComposableFunction1'.

errors in builds. Seems to happen when setting

languageVersion = '1.9'

for a project.

Rather weird, I assume languageVersion=1.9 indicates that you want K1 frontend, but the error comes from types used in K2. Please file a bug to the Google tracker.