When operating in FastCGI mode, Radicale requires either Flipflop or Flup as its FastCGI container. It does not depend on either one, which means executing /usr/share/radicale/radicale.fcgi would just bail out.
From the last “packages added to the tree” e-mail, it looks like dev-python/flipflop now also exists. I haven’t tested it at all (I use flup), but radicale.fcgi has code in it that looks like it tries to work with either framework. So maybe the dependency should be an OR-dep on those two.
Mass-closing bugs for removed packages.