I’m building an Eclipse RCP product with Maven/Tycho and need to make it load a plugin_customization.ini file with certain product preferences and cannot achieve this.

Launch arguments

I’ve added -pluginCustomization to the launch arguments of the product. This works with a local path to the plugin_customization.ini file. However, in the final product the plugin_customization.ini file is contained in a bundle, but I cannot access that. A URI with the platform:/plugin/ suffix does not work.

config.ini

Adding the same as value of the eclipse.pluginCustomization key to the generated config.ini of the product has the same problem. It can access the local file, but not the one in a product bundle.

I couldn’t figure out any possibility to add the plugin_customization.ini directly to the product outside of any bundle jar.

org.eclipse.core.runtime.products extension

According to the docs you can pass a plugin_customization.ini as value of the preferenceCustomization property of a org.eclipse.core.runtime.products extension in a product plugin. Also without success.

Instead of loading a plugin_customization.ini I may add a bundle with an activator that sets the required preferences on startup. That seems to be some overkill, because there are the above means of setting preferences. However, that will be my last resort.

1. Is it possible to add a file (plugin_customization.ini in this case) to an Eclipse product outside of a jar? How?
2. Does the platform:/plugin/ URI in principle work with launch arguments or in a config.ini or is there an alternative to access a file in a bundle?
3. What else can I try?

• Eclipse: 2022-03
• Maven: 3.6.3
• Platform: Ubuntu 20.04