CL-UNIFICATION INSTALLATION The package comes with a MK:DEFSYSTEM definition: "unification.system". Issuing (mk:load-system "CL-UNIFICATION") or (mk:compile-system "CL-UNIFICATION") will make the UNIFY package available. There is also an ASDF system definition for those who use this system. Issuing (asdf:oos 'asdf:load-op "CL-UNIFICATION") should make the library available in your environment. If your CL implementation is ASDF-INSTALL aware, you should also be able to just say (asdf-install:install "CL-UNIFICATION") provided that the package is unpacked in an ASDF-INSTALL known directory. Enjoy