How to install on Plone5?

[krissik]

I have Plone (5.0.7 and 5.1b3) installed. If I go to http://localhost:8080/Plone/prefs_install_products_form I can not find plone.app.caching to install it. But it is show in old portal_quickinstaller. I belive it is because it is in "not installable" list here

How do I install plone.app.caching on Plone 5?

[gforcada]

When you create a Plone instance using the advanced dialog you have the option there. If you want to install it with a policy package, the usual metadata.xml dependency is probably enough.

But otherwise you are right, as far as I can see, the only way is through the advanced dialog.

[jensens]

Works in 5.2.2.

[mauritsvanrees]

Wait, let me try. First Plone 5.2.1 because I wonder how it was there. Start with only the Products.CMFPlone egg:

[buildout]
extends = https://dist.plone.org/release/5.2.1/versions.cfg
parts = instance

[instance]
recipe = plone.recipe.zope2instance
eggs = Products.CMFPlone
user = admin:admin

After running buildout:

$ grep caching bin/instance 
  '/Users/maurits/shared-eggs/cp27m/z3c.caching-2.2-py2.7.egg',
  '/Users/maurits/shared-eggs/cp27m/plone.caching-1.2.1-py2.7.egg',

Create a Plone Site. Logically, the caching control panel is not there, nor is caching in the Add-ons control panel, because plone.app.caching is no dependency. Fine.

Now set Plone in the eggs. This does depend on plone.app.caching. Run buildout, start Plone. Caching is still nowhere to be seen in the existing site. Not so good. Create a fresh Plone site and caching is there.

I tried on Plone 5.2.2 [edited], but it is the same there, nothing changed.

In other words: if you start out with only Products.CMFPlone, and only later the buildout to use the Plone egg, or explicitly add plone.app.caching, then you have no way in the Plone UI to install it.
Not very nice, but I guess this does not happen often.

And I guess in the Plone versions from the first comment, there really was a problem also when you started with the full Plone egg.