When running Help > Check for updates, Eclipse finds the 4.5.2 update. When updating, I get the following error:
An error occurred while collecting items to be installed session context was:(profile=_Users_username_dev_tools_eclipses_eclipse4.5.1.mars_Eclipse.app_Contents_Eclipse, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=). No repository found containing: osgi.bundle,com.gradleware.tooling.client,0.12.0.v20160425083245 No repository found containing: osgi.bundle,com.gradleware.tooling.model,0.12.0.v20160425083245 No repository found containing: osgi.bundle,com.gradleware.tooling.utils,0.12.0.v20160425083245 No repository found containing: osgi.bundle,org.eclipse.buildship.branding,1.0.15.v20160425-1638 No repository found containing: osgi.bundle,org.eclipse.buildship.core,1.0.15.v20160425-1638 No repository found containing: osgi.bundle,org.eclipse.buildship.ui,1.0.15.v20160425-1638 No repository found containing: osgi.bundle,org.gradle.toolingapi,2.13.0.v20160425083245 No repository found containing: org.eclipse.update.feature,org.eclipse.buildship,1.0.15.v20160425-1638 No repository found containing: osgi.bundle,org.eclipse.buildship.stsmigration,1.0.15.v20160425-1638
I did remove the Gradle plugin from Help > Installation Details > Installed Software, but I still see Gradle references in Help > Installation Details > Plug-Ins.
Extract of Help > Installation Details > Configuration:
com.gradleware.tooling.client (0.6.1.v201509101146) "toolingclient" [Resolved] com.gradleware.tooling.model (0.6.1.v201509101146) "toolingmodel" [Resolved] com.gradleware.tooling.utils (0.6.1.v201509101146) "toolingutils" [Resolved]
This is on OS X El Capitan 10.11.4