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I need some help with the installation of QGIS using OSGeo4W. I am using windows 7 and I want to install a 64 bit ltr release with all relevant dependencies and plugins.

I choose to install qgis with OSGeo4w to be able to update more conveniently, but I run into problems with the installation. So I do not want to use the standalone installer any more.

I choose the advanced install option in the first step to be able to install the ltr release. In the "select packeges" step under "desktop" there are a qgis-ltr option and a qgis-ltr-full option. I understood that I would need to select the qgis-ltr-full option to get all the relevant dependencies.However, my problem is that the installer shows that qgis-ltr-full is on version 2.8.2-1 while qgis-ltr is on version 2.8.9-1.

What do I need to choose here?

I do want the latest update of the ltr with all the bugfixes, but I also do not want to pick all the dependencies and plugins by hand.

Do I need to install both? Do I get the latest ltr version that way with all dependencies? Or do I end up with two separate qgis installations when I choose both?

I did google for an answer but couldn't find any.

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qgis-ltr-full is a metapackage. I don't know exactly what packages it selects, but I believe it might select things like qgis-globe-plugin and qgis-grass-plugin in addition to qgis-ltr. You will not end up with two QGIS installations. You will notice that the installation size for qgis-ltr-full is 1 KB. That's because it's just a metapackage, not the package itself.

Selecting qgis-full is not necessary to make sure that dependencies are met. After selecting packages, the next step in the OSGeo4W installer will be to confirm the installation of unmet dependencies, which you should agree to (checked by default).

As an aside, QGIS 2.14 is listed on the QGIS website as an "LTR Candidate". It will be the candidate until the next point release (2.16), at which point it will get promoted to LTR. I would strongly consider installing qgis package, which is at version 2.14.2, instead of qgis-ltr. (If you choose QGIS in the Express Desktop Install, this is what you'll end up with.)

See info on available versions and future plans here:

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    The LTR version is an older version that is intended to be updated with backports from the current release. 2.8 was the first candidate, and 2.14 will be the next one. If the developers would have dropped 2.8 with the release of 2.14, there wold be only one version of qgis. So they keep 2.8 as LTR until 2.16 is released, then 2.14 will be the LTR for some time. – AndreJ May 11 '16 at 5:51
  • @AndreJ thanks for the info, will update my answer to reflect that. The convention is a little opaque. Ubuntu for example calls their release an LTS when it is released, rather than waiting for the next release to promote it, so I didn't quite understand what LTR Candidate meant. – Lee Hachadoorian May 11 '16 at 15:56

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