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MidnightJava
MidnightJava

Reputation: 1997

PyDev throws NPE During Sync SystemPYTHONPATH

I have an RCP app built with PYDEV in it, and every time I launch it, if there is one or more interpreters cnfigured, PyDev throws a NullPointerException while running the Sync System PYTHONPATH job. It will do this if I manually check the synchronization by clicking the button on the PyDev/Interpreters preference page, or if PyDev does the automatic sync check within one minute of starting.

It does this if I configure any interpreter. When I configure the same interpreter in the Eclipse IDE itself, I don't get the NPE. So something in my RCP app is causing PyDev to throw this error, but I don't have any idea what else I need to do to use PyDev in the app.

The NPE occurs at SynchSystemModulesManager lie 391, using PyDev 4.2.0

Upvotes: 1

Views: 513

Answers (2)

user95469
user95469

Reputation:

Another solution is to implement the required extension, it does not have to do anything.

Add the extension to your plugin.xml:

<extension
     point="org.python.pydev.pydev_interpreter_info_builder">
  <interpreter_info_builder_participant
        class="org.example.InterpreterInfoBuilderParticipant">
  </interpreter_info_builder_participant>

Then add the class:

public class InterpreterInfoBuilderParticipant implements IInterpreterInfoBuilder {
    @Override
    public BuilderResult syncInfoToPythonPath(IProgressMonitor arg0, InterpreterInfo arg1) {
        // Do nothing
        return null;
    }
}

Upvotes: 0

MidnightJava
MidnightJava

Reputation: 1997

The builder that was supposed to be contributed via an extension point was null. This led me to realize that I was missing some required plugins in the eclipse run config and in the Maven build. The problem was solved by making sure that all dependencies of org.python.pydev were included in the product.

Upvotes: 1

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