The error might not be the same for others, I have a slightly patched opam->guix-package function.
guix import opam ocaml_intrinsics Backtrace: In ice-9/boot-9.scm: 1752:10 10 (with-exception-handler _ _ #:unwind? _ # _) In unknown file: 9 (apply-smob/0 #<thunk 7ff952d2f2e0>) In ice-9/boot-9.scm: 724:2 8 (call-with-prompt _ _ #<procedure default-prompt-handle…>) In ice-9/eval.scm: 619:8 7 (_ #(#(#<directory (guile-user) 7ff952d34c80>))) In guix/ui.scm: 2263:7 6 (run-guix . _) 2226:10 5 (run-guix-command _ . _) In guix/scripts/import.scm: 92:11 4 (guix-import . _) In guix/scripts/import/opam.scm: 105:24 3 (guix-import-opam . _) In guix/import/opam.scm: 385:24 2 (opam->guix-package _ #:repo _ #:version _) In guix/import/utils.scm: 290:27 1 (beautify-description #f _) In unknown file: 0 (string-trim-both #f #<undefined> #<undefined> #<undefi…>) ERROR: In procedure string-trim-both: In procedure string-trim-both: Wrong type argument in position 1 (expecting string): #f