Gradle will warn if a project is added to the build where the associated `projectDir` does not exist or is not writable.
Starting with version 9.0, Gradle will not run builds if a project directory is missing or read-only.
If you intend to dynamically synthesize projects make sure to create directories for them as well:

=====
[.multi-language-sample]
======
.settings.gradle.kts
[source,kotlin]
----
include("project-without-directory")