Can't install plugin on Eclipse 2026-03 on MacOS

[lenzch]

I have a fresh installation of Eclipse IDE for Enterprise Java and Web Developers on macOS with:

• Version: 2026-03 (4.39.0)
• Build id: 20260305-0817

When installing the plugin in version 26.0.2 from the marketplace I get following error message:

Cannot complete the install because one or more required items could not be found.
  Software being installed: Liberty Tools 26.0.2.202602260639 (io.openliberty.tools.eclipse.feature.group 26.0.2.202602260639)
  Missing requirement: Liberty Tools Support for Language Servers 26.0.2.202602260639 (io.openliberty.tools.eclipse.lsp4e 26.0.2.202602260639) requires 'osgi.bundle; org.eclipse.jdt.ls.core 0.0.0' but it could not be found
  Cannot satisfy dependency:
    From: Liberty Tools 26.0.2.202602260639 (io.openliberty.tools.eclipse.feature.group 26.0.2.202602260639)
    To: org.eclipse.equinox.p2.iu; io.openliberty.tools.eclipse.lsp4e [26.0.2.202602260639,26.0.2.202602260639]

I checked the feature details of Eclipse and indeed, the mentioned plugin/feature (org.eclipse.jdt.ls.core) is not present.
As this was seen on another macOS device as well, I don't suspect an issue in my machine.

Any hint or help is appreciated.

P.S. A quick check with Eclipse 2025-12 resulted in the same problem.

[lenzch]

Fedora 44 seems to have the same issue.

[ajm01]

Hi @lenzch - thanks for the report on this.

Unfortunately, this is a known issue for us and many other projects that depend on the jdt.ls project. The JDT.LS project recently shipped their latest version of their plugin and in doing so mistakenly deleted all of their previous versions. Since the 26.0.2 install of Liberty Tools for Eclipse requires one of these previous releases and we can't retroactively change that we are stuck in the situation you are reporting. There is an active issue open on their project to get these previous versions restored. Here is that issue link:

https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/work_items/7622

I will keep this issue updated as this proceeds to resolution. In addition I am looking into other alternative options that may exist outside of the normal install procedure.