bug#40804: Issue with guix-install.sh script?

[operator.name]

I'd like to preface this with the fact that I have little experience with 
PGP/GPG.

$ gpg --version
gpg (GnuPG) 2.2.20
libgcrypt 1.8.5
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/operator.name/.gnupg
Supported algorithms:
Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2

$ wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import 
-
gpg: key 090B11993D9AEBB5: 129 signatures not checked due to missing keys
gpg: key 090B11993D9AEBB5: "Ludovic Courtès <address@hidden>" not changed
gpg: key 090B11993D9AEBB5: "Ludovic Courtès <address@hidden>" not changed
gpg: Total number processed: 2
gpg:              unchanged: 2

$ sudo ./guix-install.sh
    ░░░                                     ░░░
    ░░▒▒░░░░░░░░░               ░░░░░░░░░▒▒░░
     ░░▒▒▒▒▒░░░░░░░           ░░░░░░░▒▒▒▒▒░
         ░▒▒▒░░▒▒▒▒▒         ░░░░░░░▒▒░
               ░▒▒▒▒░       ░░░░░░
                ▒▒▒▒▒      ░░░░░░
                 ▒▒▒▒▒     ░░░░░
                 ░▒▒▒▒▒   ░░░░░
                  ▒▒▒▒▒   ░░░░░
                   ▒▒▒▒▒ ░░░░░
                   ░▒▒▒▒▒░░░░░
                    ▒▒▒▒▒▒░░░
                     ▒▒▒▒▒▒░
     _____ _   _ _    _    _____       _
    / ____| \ | | |  | |  / ____|     (_)
   | |  __|  \| | |  | | | |  __ _   _ ___  __
   | | |_ | . ' | |  | | | | |_ | | | | \ \/ /
   | |__| | |\  | |__| | | |__| | |_| | |>  <
    \_____|_| \_|\____/   \_____|\__,_|_/_/\_\

This script installs GNU Guix on your system

https://www.gnu.org/software/guix/
Press return to continue...
[1587683635.547]: Starting installation (Fri 24 Apr 00:13:55 BST 2020)
[1587683635.567]: [ PASS ] verification of required commands completed
[1587683635.575]: [ FAIL ] Missing OpenPGP public key.  Fetch it with this 
command:
  wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import 
-

$ wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import 
-
gpg: key 090B11993D9AEBB5: 129 signatures not checked due to missing keys
gpg: key 090B11993D9AEBB5: "Ludovic Courtès <address@hidden>" not changed
gpg: key 090B11993D9AEBB5: "Ludovic Courtès <address@hidden>" not changed
gpg: Total number processed: 2
gpg:              unchanged: 2

$ sudo ./guix-install.sh
    ░░░                                     ░░░
    ░░▒▒░░░░░░░░░               ░░░░░░░░░▒▒░░
     ░░▒▒▒▒▒░░░░░░░           ░░░░░░░▒▒▒▒▒░
         ░▒▒▒░░▒▒▒▒▒         ░░░░░░░▒▒░
               ░▒▒▒▒░       ░░░░░░
                ▒▒▒▒▒      ░░░░░░
                 ▒▒▒▒▒     ░░░░░
                 ░▒▒▒▒▒   ░░░░░
                  ▒▒▒▒▒   ░░░░░
                   ▒▒▒▒▒ ░░░░░
                   ░▒▒▒▒▒░░░░░
                    ▒▒▒▒▒▒░░░
                     ▒▒▒▒▒▒░
     _____ _   _ _    _    _____       _
    / ____| \ | | |  | |  / ____|     (_)
   | |  __|  \| | |  | | | |  __ _   _ ___  __
   | | |_ | . ' | |  | | | | |_ | | | | \ \/ /
   | |__| | |\  | |__| | | |__| | |_| | |>  <
    \_____|_| \_|\____/   \_____|\__,_|_/_/\_\

This script installs GNU Guix on your system

https://www.gnu.org/software/guix/
Press return to continue...
[1587683635.547]: Starting installation (Fri 24 Apr 00:13:55 BST 2020)
[1587683635.567]: [ PASS ] verification of required commands completed
[1587683635.575]: [ FAIL ] Missing OpenPGP public key.  Fetch it with this 
command:
  wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import 
-