Well, if you want the passwordsafe from AUR, then the procedure is: pamac build passwordsafe http://aur.archlinux.org/packages/passwordsafe
For this is good to have base-devel group installed too first
If you want the gnome-passwordsafe
from our repos, then you have to use pamac install gnome-passwordsafe
But, since your user profile points to KDE Plasma, you might need to do more tweaks there. Never tested it.
I got this output when trying to install passwordsafe:
~/opt pamac build passwordsafe Sb 05 sep 2020 09:16:29 +0000
Se prepară...
Cloning passwordsafe build files...
Checking passwordsafe dependencies...
Se rezolvă dependențele...
Se verifică inter-conflictele...
De instalat (3):
wxgtk2 3.0.5.1-1 (Necesar pentru: passwordsafe) extra 4,8 MB
xerces-c 3.2.3-1 (Necesar pentru: passwordsafe) extra 1,5 MB
zip 3.0-9 (Necesar pentru: passwordsafe) extra 174,9 kB
De construit (1):
passwordsafe 1.11.0-1 AUR
Mărimea totală a descărcării: 6,5 MB
Total installed size: 27,1 MB
Edit build files ? [y/N]
Apply transaction ? [y/N] y
==== AUTHENTICATING FOR org.manjaro.pamac.commit ====
Authentication is required to install, update, or remove packages
Authenticating as: Silviu Bogan (silviub)
Password:
==== AUTHENTICATION COMPLETE ====
Download of zip (3.0-9) started
Download of zip (3.0-9) finished
Download of wxgtk2 (3.0.5.1-1) started
Download of xerces-c (3.2.3-1) started
Download of xerces-c (3.2.3-1) finished
Download of wxgtk2 (3.0.5.1-1) finished
Se verifică inelul de chei... [3/3]
Se verifică integritatea... [3/3]
Se încarcă fișierele pachetelor... [3/3]
Se analizează conflictele de fișiere... [3/3]
Se verifică spațiul disponibil pe disc... [3/3]
Se instalează zip (3.0-9)... [1/3]
Se instalează xerces-c (3.2.3-1)... [2/3]
Se instalează wxgtk2 (3.0.5.1-1)... [3/3]
Se execută hook-urile post-tranzacții...
Arming ConditionNeedsUpdate... [1/1]
Se construiește 1passwordsafe...
==> Se face pachetul: passwordsafe 1.11.0-1 (Sb 05 sep 2020 12:17:18 +0300)
==> Se verifică dependențele necesare pentru rulare...
==> Se verifică dependențele necesare pentru compilare...
==> Se preiau sursele...
-> Se descarcă passwordsafe-1.11.0.tar.gz...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 121 100 121 0 0 124 0 --:--:-- --:--:-- --:--:-- 124
100 13.8M 0 13.8M 0 0 3669k 0 --:--:-- 0:00:03 --:--:-- 5804k
-> Se descarcă passwordsafe-1.11.0.tar.gz.sig...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 648 100 648 0 0 590 0 0:00:01 0:00:01 --:--:-- 590
100 543 100 543 0 0 329 0 0:00:01 0:00:01 --:--:-- 3290
==> Se validează source fișiere cu sha1sums...
passwordsafe-1.11.0.tar.gz ... Trecut
passwordsafe-1.11.0.tar.gz.sig ... Omis
==> Se verifică semnăturile fișierelor sursă cu gpg...
passwordsafe-1.11.0.tar.gz ... EȘUAT (cheie publică necunoscută B131423D7F2F1BB9)
==> EROARE: Una sau mai multe semnături PGP nu au putut fi verificate!
Eroare: Failed to build passwordsafe
What can I do with the last errors?: One or more PGP signatures could not be verified!
See here (can’t post links): https://forum.manjaro.org/t/aur-package-fails-to-verify-pgp-gpg-key-unknown-public-key-one-or-more-pgp-signatures-could-not-be-verified/6663
Try the command suggested in the linked thread to import the key first and then try installing the package again.