setuptools 52.0.0 breaks buildout 2.13.3 installs

[icemac]

In pypa/setuptools@2885ca2 setuptools.command.easy_install.main was removed.
It seems to be needed for a successful installation using buildout 2.13.3, so CI of various packages breaks, e. g.

• https://gitlab.com/gocept/union.cms/products.orderedbtreefolder/-/jobs/998458181
• https://github.com/zopefoundation/Products.ZCatalog/runs/1801048436

[icemac]

It seems that setuptools 52.0.0 dropped easy_install in favor of using pip. (See pypa/setuptools#2544)
Installing wheels does not seem to have this problem, so only packages without a wheel (like zc.recipe.egg) seem to be affected.

[icemac]

Maybe it's time to deprecate zc.buildout 2.x and get version 3 final. What is still open to call a next release of version 3 a final one?

[icemac]

cc @gotcha

[jugmac00]

Maybe it's time to deprecate zc.buildout 2.x and get version 3 final. What is still open to call a next release of version 3 a final one?

Given the dropped support of easy_install, pushing a version 3 release is the only way forward - imho.

[jugmac00]

Fixed by #549

[icemac]

Hm, should we create a new release now or is there something else to do on the 2.x branch?

[jugmac00]

Hm, should we create a new release now or is there something else to do on the 2.x branch?

Yes, please! see #551