I get: ```org.gradle.api.GradleScriptException: A ...

# arrow-contributors

[Marius Kotsbak]

I get:

org.gradle.api.GradleScriptException: A problem occurred evaluating project ':arrow-meta'.
	at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:93)
	at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl$2.run(DefaultScriptPluginFactory.java:237)
	at org.gradle.configuration.ProjectScriptTarget.addConfiguration(ProjectScriptTarget.java:77)
[...]
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
Caused by: org.gradle.api.GradleException: tools.jar not found at your JAVA_HOME dir /usr/lib/jvm/java-11-openjdk-amd64.
Building with a JRE or JDK9 is currently not supported

Maybe tools.jar is no more used and it is a bad check to have?:

def toolsJar = Jvm.current().getToolsJar()

    if (!toolsJar)
        throw new GradleException("tools.jar not found at your JAVA_HOME dir ${Jvm.current().getJavaHome().getAbsolutePath()}.\n" +
                "Building with a JRE or JDK9 is currently not supported.")

[Rachel]

Hi @Marius Kotsbak 🙌 Please, try it with JDK8 instead of JDK11

[Marius Kotsbak]

Probably works, but shouldn't it support newer than JDK 8?

[pakoito]

Kotlin doesn’t atm

[Marius Kotsbak]

Well, 8-13 they say: https://kotlinlang.org/docs/reference/faq.html#which-versions-of-jvm-does-kotlin-target

[Marius Kotsbak]

I can't get it to use JDK 8 either, as it detects and choses 11 during import from Gradle in IntelliJ, which fails. How do you do it?

[pakoito]

“tools.jar not found at your JAVA_HOME dir ${Jvm.current().getJavaHome().getAbsolutePath()

point your JAVA_HOME to it

[Marius Kotsbak]

Hmm maybe that works before starting IntelliJ. Looks like I can bootstrap by commenting out those lines.