package-inferred-system: declaring external dependencies
when using package-inferred-system and (uiop:define-package), I would like to be able to declare that a subsystem depends on an external system without :using/:mixing/:importing-from the external system's package and, if possible, not using (asdf:register-system-packages) in the main .asd file.
I'm abusing :import-from like "(:import-from :cxml) (:import-from :xpath)" atm, but the problem is that import-from refers to packages, not systems, apart from the fact that it's abusing the liberal syntax of the declaration.
Would a patch adding support for (uiop:define-package ... (:depends-on(-system?) ) ...) to UIOP and ASDF be acceptable?
Thank you for your work!