bug#37160: guix lint --checkers=refresh fails

[Jonathan Brielmaier]

On 27.08.19 11:44, Ludovic Courtès wrote:
> This backtrace is not from current master (there’s now a new (guix lint)
> module.)  Could you post the backtrace for master?

Backtrace on master (d78bc23411):

guix lint --checkers=refresh hello
Backtrace:ello@2.10 [refresh]...
           9 (apply-smob/1 #<catch-closure 7fcdabc0a560>)
In ice-9/boot-9.scm:
    705:2  8 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
In ice-9/eval.scm:
    619:8  7 (_ #(#(#<directory (guile-user) 7fcdabcb9140>)))
In guix/ui.scm:
  1692:12  6 (run-guix-command _ . _)
In srfi/srfi-1.scm:
    640:9  5 (for-each #<procedure 7fcdaa7e9500 at guix/scripts/lin…> …)
In guix/scripts/lint.scm:
     57:4  4 (run-checkers #<package hello@2.10 gnu/packages/base.s…> …)
In srfi/srfi-1.scm:
    640:9  3 (for-each #<procedure 7fcd9e787ba0 at guix/scripts/lin…> …)
In guix/scripts/lint.scm:
    64:17  2 (_ _)
In guix/lint.scm:
   1010:2  1 (check-for-updates #<package hello@2.10 gnu/packages/ba…>)
In ice-9/boot-9.scm:
    829:9  0 (catch srfi-34 #<procedure 7fcd9f2c0390 at guix/lint.s…> …)

ice-9/boot-9.scm:829:9: In procedure catch:
Wrong type to apply: #f

It's slightly different then on 1.0.1 (now at guix/lint.scm), but the
error seems to be the same.