When pdb2pqr >= 3.5.2 is packaged (see #1005971), 'Provides: propka' should be
added to python3-propka and symbolic link should be added to provide its main
executable as /usr/bin/propka.

 -- Andrius Merkys <merkys@debian.org>  Fri, 18 Feb 2022 10:10:22 -0500
