is there any way to inspect the full kotlinc commandline invocation?

[fisheye-123]

For bazel, i usually use "bazel build //... -s", but it doesn't work with kotlin rules.

[rockwotj]

You can --define=kt_trace=1

https://github.com/bazelbuild/rules_kotlin/blob/7b7ac2dc72dfea6e1242120ba780b3c597e5d425/kotlin/internal/toolchains.bzl#L355