Hello! Unless I mis-remember how the command works, there seems to be a problem with "guix refresh -u":
$ ./pre-inst-env guix refresh -u python-cysignals Backtrace: 14 (apply-smob/1 #<catch-closure 17b4b80>) In ice-9/boot-9.scm: 705:2 13 (call-with-prompt _ _ #<procedure default-prompt-handle…>) In ice-9/eval.scm: 619:8 12 (_ #(#(#<directory (guile-user) 186d140>))) In guix/ui.scm: 1639:12 11 (run-guix-command _ . _) In ice-9/boot-9.scm: 829:9 10 (catch _ _ #<procedure 7fd0d71109b0 at guix/ui.scm:617…> …) 829:9 9 (catch _ _ #<procedure 7fd0d71109c8 at guix/ui.scm:735…> …) In guix/scripts/refresh.scm: 513:8 8 (_) In guix/store.scm: 1693:24 7 (run-with-store _ _ #:guile-for-build _ #:system _ # _) In guix/scripts/refresh.scm: 531:16 6 (_ _) In srfi/srfi-1.scm: 640:9 5 (for-each #<procedure 2269ba0 at guix/scripts/refresh.…> …) In guix/scripts/refresh.scm: 301:20 4 (update-package #<build-daemon 256.99 1d40e60> #<packa…> …) In guix/upstream.scm: 374:22 3 (package-update #<build-daemon 256.99 1d40e60> _ _ # _) 302:17 2 (download-tarball #<build-daemon 256.99 1d40e60> #f #f # …) In guix/download.scm: 568:55 1 (download-to-store #<build-daemon 256.99 1d40e60> #f _ # …) In unknown file: 0 (basename #f #<undefined>) ERROR: In procedure basename: In procedure scm_to_utf8_stringn: Wrong type argument in position 1 (expecting string): #f Andreas