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Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1786708]

Wed, 09 May 2018 16:54

Jeffery DuBois

Messages: 4
Registered: May 2018

Junior Member

For Eclipse version 3.6.2 when installing the EGIT plug-in an error is occurring. I have tried a couple different plug-in versions. The error message is "Missing requirement:...requires '<product>' but it could not be found",
***Why are these plugins missing required products? What is the fix?****
A couple of concrete examples of error messages:
>>>>>>>>>>>>>>>>>>>>>>>>>>>
Cannot complete the install because one or more required items could not be found.
Software being installed: Eclipse JGit Command Line Interface 2.0.0.201206130900-r (org.eclipse.jgit.pgm.feature.group 2.0.0.201206130900-r)
Missing requirement: Eclipse JGit Command Line Interface 2.0.0.201206130900-r (org.eclipse.jgit.pgm.feature.group 2.0.0.201206130900-r) requires 'org.kohsuke.args4j [2.0.0,3.0.0)' but it could not be found

>>>>>>>>>>>>>>>>>>>>>>>>>>
Cannot complete the install because one or more required items could not be found.
Software being installed: EGit Mylyn 2.3.1.201302201838-r (org.eclipse.egit.mylyn.feature.group 2.3.1.201302201838-r)
Missing requirement: EGit Mylyn 2.3.1.201302201838-r (org.eclipse.egit.mylyn.feature.group 2.3.1.201302201838-r) requires 'org.eclipse.mylyn.team_feature.feature.group 3.5.0' but it could not be found
>>>>>>>>>>>>>>>>>>>>>>>>>>
Please see attached file for screenshots -

Attachment: eclipse_plugin_missing_requirement_issue.pdf
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Re: Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1786749 is a reply to message #1786708]

Thu, 10 May 2018 14:50

Matthias Sohn

Messages: 1106
Registered: July 2009

Senior Member

Why do you want to install such an ancient version of JGit and EGit ?

If you want to install the task focused interface / Mylyn integration you need the respective Mylyn version installed.
https://www.eclipse.org/mylyn/downloads/

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Re: Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1786756 is a reply to message #1786749]

Thu, 10 May 2018 16:50

Jeffery DuBois

Messages: 4
Registered: May 2018

Junior Member

Hi Matthias Sohn - Thank you for your prompt response!
As far as I know I do not necessarily want to install " the task focused interface / Mylyn integration" - it seems to be requiring this - is there some way to suppress that requirement?

Fyi I attempted to install egit 2.0.0.201206130900-r again, this time unselecting the "source" option and now I am receiving a different missing requirement -
EGit Import Support 2.0.0.201206130900-r (org.eclipse.egit.import.feature.group 2.0.0.201206130900-r) requires 'org.eclipse.team.core 3.6.100' but it could not be found"

Where do I find "org.eclipse.team.core 3.6.100" and/or the other missing products (e.g. 'org.kohsuke.args4j [2.0.0,3.0.0 ) .

The answer to your question regarding why we are using such an old version of eclipse (v3.6.2) is that my team is using a version of IBM's integration designer application that used eclipse 3.6.2 as its base. We are transitioning from SVN to Git and consequently we need to use the EGit plug-in that is compatible with 3.6.2.
Couple of questions:
1. A primary question - How do I determine what EGIT plug-ins are compatible with eclipse 3.6.2?
When I went to this site https://wiki.eclipse.org/EGit/FAQ#What_versions_of_Eclipse_does_EGit_target.3F I did not find v3.6.2 explicitly listed but I did find this reference:
EGit 2.0.0.201206130900-r >> Eclipse 3.5.2+ (Galileo) (except EGit Import Support feature, which is optional)

Then above where "3.5.2+" is referenced version "3.7.2+" is referenced.
3.6.2 is between the 3.5.2 and 3.7.2 ,
therefore it appears that EGit 2.0.0.201206130900-r is the correct plugin choice for my situation. Please confirm.
What I used for my attempts at installing plug-ins was EGit 2.0.0.201206130900-r and 2.3.1.201302201838-r.
I found the plugins at https://wiki.eclipse.org/EGit/FAQ#What_versions_of_Eclipse_does_EGit_target.3F

2. Apparently there may be several dependences that are missing from these plugins. How can I determine what all the missing dependencies are? Is there some way to identify these dependencies without having to execute multiple install attempts, one for each dependency failure?

Thank you for all your help! It is very much appreciated.

[Updated on: Fri, 11 May 2018 12:17]

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Re: Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1787085 is a reply to message #1786756]

Fri, 18 May 2018 15:51

Jeffery DuBois

Messages: 4
Registered: May 2018

Junior Member

I found a solution to this "Missing Requirements" issue EGIT plugin install issue - essentially the solution was to install the EGit plugin without installing the "EGit Mylyn" feature and without installing the "EGIT Plug-in Import Support" feature.
To do this I brought up the Java Perspective first, and then I selected the Help>>Install New Software option, then I entered in the "Work with:" text field the following url: ' http://download.eclipse.org/egit/updates-2.1/ '.
After the IDE reads in the available install-able products/features based on that url, the IDE by default selects all the products to be installed. To unselect items to be installed, I expanded the "Eclipse Git Team Provider" option, and then un-selected both the "EGit Mylyn" and "EGit Plug-in Import Support" features/options. I then Clicked on Next, agreed to the conditions mentioned, and then clicked on Finish. Once the installation finishes you are prompted to restart the IID.

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Re: Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1787089 is a reply to message #1786708]

Fri, 18 May 2018 16:14

Jeffery DuBois

Messages: 4
Registered: May 2018

Junior Member

Solution was to unselect both the "EGit Mylyn" feature and the "EGIT Plug-in Import Support" feature so that no attempt would be made to install those features.

Attachment: egit_plugin_screenshot.pdf
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Re: Eclipse EGIT plugin install Missing Requirement required items could not be found [message #1788651 is a reply to message #1787089]

Wed, 30 May 2018 19:26

Matthias Sohn

Messages: 1106
Registered: July 2009

Senior Member

If you want to find out which version of mylyn is needed look at the source code of that version [1]:

<requires>
<import feature="org.eclipse.egit" version="2.0.0" match="greaterOrEqual"/>
<import feature="org.eclipse.mylyn.team_feature" version="3.5.0" match="greaterOrEqual"/>
</requires>

[1] https://git.eclipse.org/r/plugins/gitiles/egit/egit/+/1f07f085d6bcae0caf372fffec19583ac5615d3b/org.eclipse.egit.mylyn-feature/feature.xml#26

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