The KeePassX upstream project hasn't been updated since October 2016. A community fork called KeePassXC was started from the latest source code and now includes new features and bug fixes, and the maintainers are very active and responsive. I recommend to install that snap instead. -- elopio
KeePassX is an application for people with extremely high demands on secure
personal data management. It has a light interface, is cross platform and
published under the terms of the GNU General Public License.
Enable snaps on Linux Mint and install keepassx-elopio
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap is available for Linux Mint 18.2 (Sonya), Linux Mint 18.3 (Sylvia), and the latest releases, Linux Mint 19 (Tara), Linux Mint 19.1 (Tessa), Linux Mint 19.2 (Tina) and Linux Mint 19.3 (Tricia).
You can find out which version of Linux Mint you’re running by opening System info from the Preferences menu. To install snap from the Software Manager application, search for snapd and click Install.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either restart your machine, or log out and in again, to complete the installation.
To install keepassx-elopio, simply use the following command: