Hello, This command: guix environment --container --no-cwd --ad-hoc sbcl sbcl-serapeum -- \ sbcl --eval '(require :asdf)' --eval '(require :serapeum)' --quit ...yields an error from SBCL: ... ASDF could not load serapeum because Component "fare-quasiquote-extras" not found, required by #. debugger invoked on a ASDF/FIND-COMPONENT:MISSING-DEPENDENCY in thread #: Component "fare-quasiquote-extras" not found, required by # ... The same command works with other substantial packages if you replace (both mentions of) serapeum with dramka or cl-async for example. Maybe there is a dependency issue with either serapeum or the fare utils? How might this be fixed? guix --version guix (GNU Guix) 9d0dfd9a9a7c43363a4e140c20d49f119fe6f2e3 Thanks! -- Martin