Thanks for the review! After some discussion with upstream, it does not seem that Roswell can be used without using a binary blob of SBCL: https://github.com/roswell/roswell/issues/387 So I don't think that makes it a good fit for a Guix package. A few options: - Patch Roswell so that it takes Guix' SBCL instead of its own (could be a lot of work). - Patchelf the binary blob. Thoughts? -- Pierre Neidhardt https://ambrevar.xyz/