Try to install pgp-tools on fedora30, fails because of a broken dependency:

 [ludovic@pie3moins ~]$ sudo dnf install pgp-tools
[sudo] password for ludovic: 
Fedora Modular 30 - aarch64                      41 kB/s |  24 kB     00:00    
Fedora Modular 30 - aarch64 - Updates            26 kB/s |  21 kB     00:00    
Fedora 30 - aarch64 - Updates                    34 kB/s |  22 kB     00:00    
Fedora 30 - aarch64                              82 kB/s |  24 kB     00:00    
Error: 
 Problem: conflicting requests
  - nothing provides /usr/bin/pgpring needed by pgp-tools-2.7-3.fc29.aarch64
(try to add '--skip-broken' to skip uninstallable packages)
[ludovic@pie3moins ~]$ 


and I get the same kind of error on x86_64