Gradle not working on Jigsaw

[Stephen Felts]

I have the line

def branch = file('..').name

in build.gradle.

Running 'gradle' on build 140

Jdk-9 - runs fine

JDK-9 Jigsaw gets
* What went wrong:
A problem occurred evaluating root project 'dir'.
> No such property: name for class: java.io.File

To run on Jigsaw, I also need to set _JAVA_OPTIONS to include
--add-exports-private=java.base/java.lang=ALL-UNNAMED
--add-exports-private=java.base/java.util=ALL-UNNAMED