Previous installations couldn't really works actually, from:
- marketplace
- manual download of [subclipse-4.3.4.zip] alone is not enough
https://github.com/subclipse/subclipse/releases/tag/4.3.4
I reinstall everything from:
subclipse.github.io/4.3.x
https://subclipse.github.io/updates/subclipse/4.3.x/
as per wiki guide: https://github.com/subclipse/subclipse/wiki
----
Installation on: 20260112T113942+0800
https://marketplace.eclipse.org/content/subclipse
with Errors:
Cannot complete the install because of a conflicting dependency.
Software being installed: Subclipse Integration for Mylyn (Optional) 4.2.0.1 (org.tigris.subversion.subclipse.mylyn.feature.feature.group 4.2.0.1)
Software currently installed: Mylyn Context Connector: Eclipse IDE 4.7.0.v20250326-1000 (org.eclipse.mylyn.ide.feature.feature.group 4.7.0.v20250326-1000)
Only one of the following can be installed at once:
Mylyn Team UI 4.7.0.v20250326-1000 (org.eclipse.mylyn.team.ui 4.7.0.v20250326-1000)
Mylyn Team UI 4.0.0.v20230804-1109 (org.eclipse.mylyn.team.ui 4.0.0.v20230804-1109)
Mylyn Team UI 3.24.0.v20170629-2230 (org.eclipse.mylyn.team.ui 3.24.0.v20170629-2230)
Mylyn Team UI 4.9.0.v20251121-0621 (org.eclipse.mylyn.team.ui 4.9.0.v20251121-0621)
Cannot satisfy dependency:
From: Mylyn Context Connector: Eclipse IDE 4.7.0.v20250326-1000 (org.eclipse.mylyn.ide.feature.feature.group 4.7.0.v20250326-1000)
To: org.eclipse.equinox.p2.iu; org.eclipse.mylyn.team.feature.feature.group [4.7.0,4.8.0), filter=(!(org.eclipse.equinox.p2.exclude.import=true))
Cannot satisfy dependency:
From: Mylyn Context Connector: Team Support 4.7.0.v20250326-1000 (org.eclipse.mylyn.team.feature.feature.group 4.7.0.v20250326-1000)
To: org.eclipse.equinox.p2.iu; org.eclipse.mylyn.team.ui [4.7.0.v20250326-1000,4.7.0.v20250326-1000]
Cannot satisfy dependency:
From: Subclipse Integration for Mylyn 3.x 4.2.0.1 (org.tigris.subversion.subclipse.mylyn 4.2.0.1)
To: osgi.bundle; org.eclipse.mylyn.team.ui [3.0.0,4.2.0)
Cannot satisfy dependency:
From: Subclipse Integration for Mylyn (Optional) 4.2.0.1 (org.tigris.subversion.subclipse.mylyn.feature.feature.group 4.2.0.1)
To: org.eclipse.equinox.p2.iu; org.tigris.subversion.subclipse.mylyn [4.2.0.1,4.2.0.1]
xxx - missed out 1 of the screenshot...

Restart eclipse to complete the installation.