Python doesn't appear in preference window - eclipse

I am trying to install Pydev in eclipse Helios on windows 7. I have done that through help/Install new software. When attempting to configure Eclipse to find my installed Python, (Window -> Preferences) the list that appears does not contain Python. When I browse in google about this, someone suggests to run eclipse as administrator. When I try to install the software again, it says that
Software being installed: Pydev Mylyn Integration 0.4.0
(org.python.pydev.mylyn.feature.feature.group 0.4.0)
Missing requirement: Pydev Mylyn Integration 0.4.0
(org.python.pydev.mylyn.feature.feature.group 0.4.0) requires
'org.eclipse.mylyn.context.core 0.0.0' but it could not be found

Why are you using an old version of Eclipse? What I would try first is to download the stable Eclipse version (currently Juno), open it with a new workspace location (to avoid any old config files being loaded) and install PyDev using their suggested method (add the pydev.org/updates software source and select their packages).
If you still experience problems after doing this, let us know about it - personally, I never had similar trouble.

Related

How to update Eclipse from 2018-09 to 2018-12

I have Eclipse 2018-09. My impressions was that Eclipse was moving to a rolling quarterly release, and by that I presumed I'd magically be offered updates every quarter to the newest. But now that 2018-12 is out, my instance does not detect any new updates.
Looking at the update sites in Windows -> Preferences, Install/Update -> Available Software Sites (incompletely listed below), I notice they seemed to be pinned to specific versions:
The Eclipse Project Updates: http://download.eclipse.org/eclipse/updates/4.9
The Eclipse Project Updates: http://download.eclipse.org/eclipse/updates/4.9/categories
Eclipse Project Repository for 2018-09: http://download.eclipse.org/eclipse/updates/4.9/R-4.9-201809060745
2018-09: http://download.eclipse.org/releases/2018-09
Oracle Enterprise Pack for Eclipse 12.2.1.8 Dependencies: http://download.oracle.com/otn_software/oepe/12.2.1.8/oxygen/repository/dependencies/
I've noticed there is also now an Eclipse Installer, which says it is "The easiest way to install and update your Eclipse Development Environment.". However, there is no description of updating, and when running it and pointing to the existing folder for 2018-09 (yes, I made a backup first to be safe), it does not update that folder but instead just creates a new sub-folder under the existing 2018-09 version called "eclipse" with presumably a complete copy of the new eclipse. So that's a failed attempt.
What is the recommended way of upgrading from 2018-09 to 2018-12? Is it:
Manually download a new copy of Eclipse and spend hours configuring it to hopefully be almost the same as the configurations in 2018-09
Run the Eclipse installer in some other manner than I already have.
Manually updating the update sites (to what values?). If the so, is there a way to specify to always use the latest on the update train?
Other?
See Eclipse FAQ - Always enable major upgrades:
To always enable major upgrades of your IDE once and for all:
from the Available Software Sites preference page
enable the Latest Eclipse release http://download.eclipse.org/releases/latest repository by ticking the checkbox.
Apply and Close
Check for updates
The similar workflow can be used to hide and disable automatic
proposal of major upgrades.
To my knowledge, the update site http://download.eclipse.org/releases/latest exists since Eclipse Photon (4.8) in Window > Preferences: Install/Update > Available Software Sites but is not checked by default.
If you want to change the default of this preference, vote for or comment on Eclipse bug 539281 - Enable http://download.eclipse.org/releases/latest by default.
The two advantages of using the Eclipse Installer over the direct installation of one or more IDE packages are:
The Eclipse Installer saves disk space when installing multiple IDE packages (by using a shared pool for the plug-ins of all IDE packages)
The Eclipse Installer makes it easier to contribute to an Eclipse project (advanced mode).
Another way to install Eclipse 2018-12 is to use Chocolatey on Windows. Eclipse 2018-12 corresponds to version 4.10.
PS C:> choco list eclipse
Chocolatey v0.10.11
eclipse 4.10 [Approved]
...
PS C:> choco install eclipse
...
But this won't do an in-place upgrade.
Go to Window-> Preferences -> Install/Update -> Available Software Sites
First, if exists remove duplicate sites
Second, click to eclipse related update sites and Reload

GWT Plugin for eclipse 3.7(helios). i am getting error

After selecting google plugin for eclipse and SDK and proceeding next . I am getting error
Cannot complete the install because one or more required items could not be found.
Software being installed: Google Plugin for Eclipse 3.7 3.2.4.v201306061638-rel-r37
(com.google.gdt.eclipse.suite.e37.feature.feature.group 3.2.4.v201306061638-rel-r37)
Missing requirement: Google Plugin for Eclipse 3.7 3.2.4.v201306061638-rel-r37
(com.google.gdt.eclipse.suite.e37.feature.feature.group 3.2.4.v201306061638-rel-r37)
requires 'org.eclipse.wst.css.core 0.0.0' but it could not be found
Are you installing plugins using the eclipse marketplace? If you're installing plugins by manually entering repositories make sure they have a plugin that's compatible with your version of eclipse.
As Glenn noted, you need to be very careful with versions here.
It is best to install any ecplise pulgin using an update site. For Eclipse 3.7, you would use http://dl.google.com/eclipse/plugin/3.7 for the GWT update site.
If you were to do a manual install, then make sure to download the correct archive, in your case 3.7, listed here: https://developers.google.com/eclipse/docs/install-from-zip
If the installation is giving you trouble, try restarting Eclipse and run it as administrator. This could be the case if Eclipse is installed in a shared or system directory (e.g. "Program Files").
If you have selected the Android development kit part of the GPE then you need to separately install the Android SDK. But you don't need that if you are only doing GWT development. Just uncheck that.

Cannot install Mercurial on Eclipse Juno

Attempting to install Mercurial on Eclipse Java EE IDE Juno from
http://cbes.javaforge.com/update in the Install new software...
but,
"Cannot complete the install because one or more required items could not be found. Software being installed: codeBeamer Eclipse Studio (with Mylyn) 3.1.0.v201011161842 (org.codebeamer.eclipse.mylyn_feature.feature.group 3.1.0.v201011161842) Missing requirement: codeBeamer Eclipse Studio (with Mylyn) 3.1.0.v201011161842 (org.codebeamer.eclipse.mylyn_feature.feature.group 3.1.0.v201011161842) requires 'org.eclipse.mylyn_feature.feature.group 3.3.0' but it could not be found
I tried on Windows 7_64 and ubuntu 12.04_64. I even installed mylyn using the latest stable releases from http://download.eclipse.org/mylyn/releases/latest
Any Ideas?
Already browsed web and this site.
You could also try the update URL from the Google Code repository instead, which installs only MercurialEclipse.
+1 to installing from Google Code Repository.
Initially Eclipse wouldn't start because of problems with the older version of the plugin so to get past this simply removed the jar com.vectrace.MercurialEclipse_1.9.1.v201111302231.jar from the Eclipse plugins directory then uninstalled the existing plugin and re-installed from the link in smooth reggae's post.
All seems good so far.
The problem is, that the codeBeamer Eclipse Studio requires an older version of Mylyn (3.3.0), which isn't available for Juno.
But AFAIK you don't need the whole CBES, if you only need the Mercurial features. Try to select only MercurialEclipse, it should also be available in that update site.

Installing GWT plugin for eclipse

I have tried to install the GWT plugin for eclipse helios. when I try to I get this message:
Cannot complete the install because one or more required items could
not be found. Software being installed: Google Web Toolkit SDK 2.4.0
2.4.0.v201203300216-rel-r36 (com.google.gwt.eclipse.sdkbundle.e36.feature.feature.group
2.4.0.v201203300216-rel-r36) Missing requirement: Google Plugin for Eclipse 3.6 2.5.2.v201203300216-rel-r36
(com.google.gdt.eclipse.suite.e36.feature.feature.group
2.5.2.v201203300216-rel-r36) requires 'org.eclipse.wst.css.core 0.0.0' but it could not be found Cannot satisfy dependency:
From: Google Web Toolkit SDK 2.4.0 2.4.0.v201203300216-rel-r36 (com.google.gwt.eclipse.sdkbundle.e36.feature.feature.group
2.4.0.v201203300216-rel-r36)
To: com.google.gdt.eclipse.suite.e36.feature.feature.group 2.5.2..
Tried using both local files and downloading using eclipse. Nothing seems to work.
See https://developers.google.com/eclipse/docs/faq#wstinstallerror
You have to install WST first, and then you'll be able to install the Google Plugin for Eclipse.
This message generally says that there are problems when trying to connect to Helios update server. Because when installing GWT, you need extra package from it.
I met the similar(same ?) problem with Luna 64bit eclipse, when trying to install Google Plugins for Eclipse. This is solution I suggested:
1. Go to Preferences -> Install Update -> Available Software Update.
2. Delete Helios entry. Quit eclipse. Make sure your network is ok. Reopen eclipse. Go back and re-add Helios entry. Click reload.
3. If no Helios entry is found in step 2, then simply add it and no need to do the else.

Eclipse Java EE - Galileo - Unable to view plugins

I am new to Eclipse so I am having a hard time troubleshooting this problem. I have a new installation of Eclipse Java EE - Galileo on Windows, and I am unable to see any changes made in the IDE after installing plugins. I have verified that the plugins are installed via installation details, but see no changes made.
For example, after installing the maven integration plugin m2eclipse I go to File->New->Project ... and I have no option for maven. After installing the QuickRex plugin I have no view for it etc.
I have tried re-installing the plugins, re-installing Eclipse, and starting Eclipse with the -clean option, but nothing has resolved the issue.
Any ideas? Thanks!
Ok. This is just a wild guess but could you start over with a fresh install and make sure that you uncheck the option Contact all update sites during install to find required software as shown below:
alt text http://img717.imageshack.us/img717/8039/screenshot003ao.png
I faced a similar problem (on another platform than yours), some updates were "disabling" all my plugins. Not checking this option allowed me to work around this issue.
Follow-up: You'll need to install that Zest stuff manually from the GEF update site:
alt text http://img339.imageshack.us/img339/8003/screenshot003rl.png