abcl-1.2.0-dev currently uses asdf-2.32 which includes a perfectly fine (as far as we know) UIOP.
But one can't load UIOP 2.32.5 from Quicklisp 2013-03-12 in abcl-1.2.0-dev, getting the following error:
The symbol UIOP/UTILITY::LOAD-ASDF-DEBUG-UTILITY is not accessible in package UIOP/DRIVER
which is triggered by the following UNEXPORT:
(UNEXPORT UIOP/UTILITY::LOAD-ASDF-DEBUG-UTILITY #<PACKAGE UIOP/DRIVER>)
Is it to be expected that ASDF cannot, in general, "host" later versions of UIOP without first upgrading ASDF?
It might be nice to consider some sort of warning in this situation, as until ASDF3 gets more widespread, people may be tempted to get Quicklisp to locate and load UIOP for them.
Or maybe I have misunderstood the packaging of ASDF with ABCL? I have been simply using the results of "make build/asdf.lisp" in the path of our CL:REQUIRE implementation. I am supposed to somehow make the asdf.asd and uiop.asd files accessible as well?