Problem with `guix package --install-from-file` and certs on Guix System

[Stephen Scheck]

Hello,

I'm trying to build a package locally - perl-net-bgp.scm was generated via
`guix import cpan Net::BGP`:

/# guix package --install-from-file=perl-net-bgp.scm
Backtrace:
In ice-9/boot-9.scm:
    829:9 19 (catch _ _ #<procedure 7ff0057cc398 at guix/ui.scm:773?> ?)
In guix/scripts/package.scm:
   943:10 18 (_)
In guix/status.scm:
    768:4 17 (call-with-status-report _ _)
In guix/scripts/package.scm:
   951:14 16 (_)
In guix/build/syscalls.scm:
   1142:4 15 (call-with-file-lock/no-wait _ _ _)
In guix/scripts/package.scm:
    906:8 14 (_)
In guix/ui.scm:
   1048:4 13 (show-manifest-transaction #<store-connection 256.99 7?> ?)
In srfi/srfi-1.scm:
   628:19 12 (mapn ("perl-net-bgp") (("0.17") ("out") (#<package?>)) 1)
In guix/ui.scm:
  1053:23 11 (_ "perl-net-bgp" "0.17" "out" #<package perl-net-bgp@0?>)
In guix/packages.scm:
  1308:13 10 (package-output #<store-connection 256.99 7ff005b46960> ?)
   948:16  9 (cache! #<weak-table 111/223> #<package perl-net-bgp@0?> ?)
  1267:22  8 (thunk)
  1200:25  7 (bag->derivation #<store-connection 256.99 7ff005b46960> ?)
In srfi/srfi-1.scm:
   592:29  6 (map1 (("perl" #<package perl@5.30.0 gnu/packages/?>) ?))
   592:17  5 (map1 (("source" #<origin "mirror://cpan/authors/i?>) ?))
In ice-9/boot-9.scm:
    829:9  4 (catch srfi-34 #<procedure 7feff76708a0 at guix/packag?> ?)
In guix/packages.scm:
  1015:18  3 (_)
In guix/store.scm:
  1841:24  2 (run-with-store #<store-connection 256.99 7ff005b46960> ?)
  1699:13  1 (_ _)
In guix/build/download.scm:
    745:0  0 (url-fetch _ _ #:timeout _ #:verify-certificate? _ # _ # ?)

guix/build/download.scm:745:0: In procedure url-fetch:
Invalid keyword: #vu8(190 12 104 102 229 3 248 226 122 163 239 14 65 53 203
251 61 122 70 201 237 92 18 150 86 80 216 98 89 234 72 125)

This looks to be an issue verifying a TLS cert for whatever CPAN mirror the
package is choosing to download the CPAN module from.

Is there something special that needs to be done on Guix to install root
certs? I've tried adding the nss-certs, le-certs, and guile2.0-gnutls
packages, but they don't help.

Thanks.