unable to install m2e-wtp maven in eclipse juno - maven-plugin

Cannot complete the install because one or more required items could not be found.
Software being installed: m2e-wtp - JPA configurator for WTP (Optional) 1.0.1.e42-20130821-1033 (org.eclipse.m2e.wtp.jpa.feature.feature.group 1.0.1.e42-20130821-1033)
Missing requirement: Maven Integration for Eclipse WTP 1.0.0.20130613-0136 (org.eclipse.m2e.wtp 1.0.0.20130613-0136) requires 'bundle org.eclipse.m2e.maven.runtime [1.4.0,2.0.0)' but it could not be found
Missing requirement: Maven Integration for Eclipse WTP 1.0.1.20130911-1545 (org.eclipse.m2e.wtp 1.0.1.20130911-1545) requires 'bundle org.eclipse.m2e.maven.runtime [1.4.0,2.0.0)' but it could not be found
Cannot satisfy dependency:
From: Maven JPA Configurator 1.0.1.e42-20130821-1033 (org.eclipse.m2e.wtp.jpa 1.0.1.e42-20130821-1033)
To: bundle org.eclipse.m2e.wtp 1.0.0
Cannot satisfy dependency:
From: m2e-wtp - JPA configurator for WTP (Optional) 1.0.1.e42-20130821-1033 (org.eclipse.m2e.wtp.jpa.feature.feature.group 1.0.1.e42-20130821-1033)
To: org.eclipse.m2e.wtp.jpa [1.0.1.e42-20130821-1033]

The message is saying the install needs the org.eclipse.m2e.maven.runtime plugin with a version of at least 1.4.0 (and not above 2.0.0).
I think Eclipse Juno has an earlier release of this plugin so you will need to move to a newer version of Eclipse to use this.

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unable to install TestNg in Eclipse getting errror like"Cannot complete the install because one or more required items could not be found"

i have tried to install TestNG in these ways:
1: Help>> install new software>> work with>> http://beust.com/eclipse/enter
Or use this http://dl.bintray.com/testng-team/testng-eclipse-release/
2: Help >> Eclipse MarketPlace >> Search for TestNG
after while getting an error like
Cannot complete the install because one or more required items could not be found.
Software being installed: TestNG M2E (Maven) Integration (Optional) 7.3.0.202008060412 (org.testng.eclipse.maven.feature.feature.group 7.3.0.202008060412)
Missing requirement: TestNG Eclipse Support 7.3.0.202008060412 (org.testng.eclipse 7.3.0.202008060412) requires 'bundle org.eclipse.jdt.launching 3.10.0' but it could not be found
Cannot satisfy dependency:
From: TestNG 7.3.0.202008060412 (org.testng.eclipse.feature.group 7.3.0.202008060412)
To: org.testng.eclipse [7.3.0.20200806041

Unable to install DevKit Plugin

I'm trying to install Devkit plugin in anypoint studio and after following below steps:
https://docs.mulesoft.com/connector-devkit/3.9/setting-up-your-dev-environment im getting below error message, Please help
Cannot complete the install because one or more required items could
not be found. Software being installed: Anypoint DevKit Extension
1.1.5.201608221430 (org.mule.tooling.devkit.extension.feature.group 1.1.5.201608221430)'
Missing requirement: org.mule.tooling.devkit 1.1.5.201608221430 (org.mule.tooling.devkit 1.1.5.201608221430) requires 'osgi.bundle;
org.mule.tooling.runtime [6.1.0,7.0.0)' but it could not be found
Cannot satisfy dependency:
From: Anypoint DevKit Extension 1.1.5.201608221430 (org.mule.tooling.devkit.extension.feature.group 1.1.5.201608221430)
To: org.eclipse.equinox.p2.iu; org.mule.tooling.devkit [1.1.5.201608221430,1.1.5.201608221430]
You are trying to install DevKit in Studio 7.x. DevKit is designed to work with Mule 3.x and its matching Studio version, which is Studio 6.x. It is not compatible with Studio 7. Try with the last version of Studio 6 available at this time, currently 6.6.4 (https://www.mulesoft.com/lp/dl/studio/previous).
If instead you are trying to develop connectors and modules for Mule 4.x, then you have to use the Mule SDK. Currently there is no Studio plugin for Mule SDK. It is based on Maven. You should use Maven on the command line or a different IDE to create a project, as mentioned in the documentation.

Angularjs plugin installation error

Cannot complete the install because one or more required items could not be found.
Software being installed: Tern Toolings 1.1.0.201511082254 (tern.eclipse.ide.tools.feature.feature.group 1.1.0.201511082254)
Missing requirement: Tern - Eclipse 1.1.0.201511082254 (tern.eclipse 1.1.0.201511082254) requires 'bundle org.eclipse.swt 3.7.0' but it could not be found
Cannot satisfy dependency:
From: Tern - Eclipse - Core IDE 1.1.0.201511082254 (tern.eclipse.ide.core 1.1.0.201511082254)
To: bundle tern.eclipse 0.0.0
The key here is the "requires 'bundle org.eclipse.swt 3.7.0'" message - version 3.7.0 or newer of SWT is required.
It looks like your version of Eclipse is out of date, you need Eclipse 3.7 or 3.8 or Eclipse 4.2 or later.

Installing cakedc/users on CakePHP 3.1 version conflict

I'm trying to install Cake dc users on a Cakephp 3.1
That's a part of my composer.json that I'm almost sure that is properly setup mantain the cake version to 3.1:
"require": {
"php": ">=5.4.16",
"cakephp/cakephp": "~3.1",
I used the following command to setup cake:
composer create-project cakephp/app ar2016-2 3.1.*
and that's the result I get when I try to install DCUsers with the composer:
composer require cakedc/users:~3.1.0
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Conclusion: remove cakephp/cakephp 3.2.1
- Conclusion: don't install cakephp/cakephp 3.2.1
- cakedc/users 3.1.0 requires cakephp/cakephp ~3.1.0 -> satisfiable by cakephp/cakephp[3.1.0, 3.1.0-RC1, 3.1.0-beta, 3.1.0-beta2, 3.1.1, 3.1.10, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9].
...
It looks that it detects CakePHP 3.2.1 but everywhere I check show me that I'm using the proper 3.1. version. Any Idea?
Thanks in advance,
David
I'd doubt that it shows that you've installed 3.1 anywhere at all, because the latest release is 3.2.1 and, ~3.1 means >= 3.1 and < 4.0.0, and therefore I'm pretty sure that you have the latest version installed, ie 3.2.1, a quick bin/cake will probably confirm that.
https://getcomposer.org/doc/articles/versions.md#tilde
The cakedc/users version that you have requested, requires cakephp/cakephp:3.1.*, which means >= 3.1 and < 3.2, hence the error.
https://getcomposer.org/doc/articles/versions.md#wildcard
So either use the master branch of the plugin (it requires cakephp/cakephp:~3.1) until a proper release is issued, or use a more specific version constraint for the CakePHP framework, like 3.1.*
Thanks for the answer but it's just fixed, it was a problem of the plugin itself and cakedc fixed.

A Maven plugin 1.8.3 to support App Engine requires Maven version 3.1.0

Could someone compile this pom.xml from this tutorial:
https://code.google.com/p/appengine-maven-plugin/
I tried as well this one, but I'm not familiar wtih 'maven invoker plugin configuration' and settings.xml
https://code.google.com/p/appengine-maven-plugin/source/browse/pom.xml
The error I'm getting is the following:
[ERROR] Failed to execute goal com.google.appengine:appengine-maven-plugin:1.8.3:devserver (default-cli) on project nerinorestaurante: The p
lugin com.google.appengine:appengine-maven-plugin:1.8.3 requires Maven version 3.1.0 -> [Help 1]
I think your intention is to use the appengine-maven-plugin?
If so, you need to use version 3.1 of maven. Download it, install it.
It is all clearly explained here : http://maven.apache.org/
Appengine requires JDK 7 (not 8 or 9, for example).
Set JAVA_HOME, JDK_HOME environment variables. E.g.:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home

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