p5-module-signature has problems to build with Perl 5.34 (and similarly with Perl 5.38)

[ballapete (Peter "Pete" Dyballa)]

When trying to install this module, because another module requires it, which in turn is required by a third one, perl reports a few times that /opt/local/libexec/keyboxd does not work, generally:

--->  Configuring p5.34-module-signature
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_perl_p5-module-signature/p5.34-module-signature/work/Module-Signature-0.89" && /opt/local/bin/perl5.34 Makefile.PL INSTALLDIRS=vendor CC="/usr/bin/clang" LD="/usr/bin/clang" 
Looking for GNU Privacy Guard (gpg), a cryptographic signature tool...
gpg: directory '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_perl_p5-module-signature/p5.34-module-signature/work/.home/.gnupg' created
gpg: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_perl_p5-module-signature/p5.34-module-signature/work/.home/.gnupg/trustdb.gpg: trustdb created
gpg: error running '/opt/local/libexec/keyboxd': exit status 2
gpg: failed to start keyboxd '/opt/local/libexec/keyboxd': General error
gpg: can't connect to the keyboxd: General error
gpg: error opening key DB: No Keybox daemon running
gpg: keydb_search_first failed: Input/output error
GnuPG found (/opt/local/bin/gpg2).
Import PAUSE and author keys to GnuPG? [y] y
Importing... gpg: error running '/opt/local/libexec/keyboxd': exit status 2
gpg: failed to start keyboxd '/opt/local/libexec/keyboxd': General error
gpg: can't connect to the keyboxd: General error
gpg: error opening key DB: No Keybox daemon running
gpg: error running '/opt/local/libexec/keyboxd': exit status 2

In ~ (/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_perl_p5-module-signature/p5.34-module-signature/work/.home) .gnupg is created which contains:

total 16
-rw-r-----  1 macports  wheel    12  5 Nov 12:31 common.conf
drwxr-x---  2 macports  wheel    68  5 Nov 12:31 public-keys.d
-rw-------  1 macports  wheel  1200  5 Nov 12:31 trustdb.gpg

.gnupg/public-keys.d:

[ballapete (Peter "Pete" Dyballa)]

Main.log from High Sierra 10.13.6