I'm running Eclipse 2021-06 on Ubuntu Linux.
I selected the software site http://download.eclipse.org/ldt/releases/stable,
selected all 4 of the available tools:
Lua Development Tools 1.4.2.201804031433
Lua Development Tools - Remote Development Support 1.4.2.201804031433
Lua Development Tools - Remote Development Support SDK 1.4.2.201804031433
Lua Development Tools SDK 1.4.2.201804031433
Cannot complete the install because one or more required items could not be found.
Software being installed: Lua Development Tools SDK 1.4.2.201804031433 (org.eclipse.ldt.source.feature.group 1.4.2.201804031433)
Missing requirement: Lua Development Tools Core 1.3.0.201804031433 (org.eclipse.ldt 1.3.0.201804031433) requires 'osgi.bundle; org.eclipse.dltk.core [5.5.0,6.0.0)' but it could not be found
Cannot satisfy dependency:
From: Lua Development Tools - Core Feature 1.4.2.201804031433 (org.eclipse.ldt.core.feature.group 1.4.2.201804031433)
To: org.eclipse.equinox.p2.iu; org.eclipse.ldt [1.3.0.201804031433,1.3.0.201804031433]
Cannot satisfy dependency:
From: Lua Development Tools 1.4.2.201804031433 (org.eclipse.ldt.feature.group 1.4.2.201804031433)
To: org.eclipse.equinox.p2.iu; org.eclipse.ldt.core.feature.group [1.4.2.201804031433,1.4.2.201804031433]
Cannot satisfy dependency:
From: Lua Development Tools SDK 1.4.2.201804031433 (org.eclipse.ldt.source.feature.group 1.4.2.201804031433)
To: org.eclipse.equinox.p2.iu; org.eclipse.ldt.feature.group [1.4.2.201804031433,1.4.2.201804031433]
What do I need to add to be able to install LDT?
Thanks for any help you can give.