Support of :local-nicknames on ABCL, CCL, Clasp and ECL
I wasn't able to fork your repo to create a merge request by myself. Seems like new users get exactly 0 repos to start with :) But the change is trivial enough to be described below.
All of the implementations, mentioned in the title, support Pakcage Local Nicknames. We just need to update the feature expression in https://gitlab.common-lisp.net/asdf/asdf/blob/master/package-inferred-system.lisp#L78 to be
#+(or abcl ccl clasp ecl sbcl).